Home / 7,977.59-11,009.07-4,440.72

Finding the Fourth Proportional to 7,977.59, 11,009.07 and 4,440.72

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Solution

The fourth proportional to 7,977.59, 11,009.07 and 4,440.72 is: 6,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.59 : 11,009.07 = 4,440.72 : x
  2. Step 2: Convert to fraction form
    7,977.59/11,009.07 = 4,440.72/x
  3. Step 3: Cross multiply
    7,977.59x = 11,009.07 × 4,440.72
  4. Step 4: Simplify right side
    7,977.59x = 48,888,238.61
  5. Step 5: Solve for x
    x = 48,888,238.61/7,977.59
  6. Step 6: Final answer
    x = 6,128.20

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.