Home / 7,977.65-11,009.59-4,440.78

Finding the Fourth Proportional to 7,977.65, 11,009.59 and 4,440.78

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Solution

The fourth proportional to 7,977.65, 11,009.59 and 4,440.78 is: 6,128.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.65 : 11,009.59 = 4,440.78 : x
  2. Step 2: Convert to fraction form
    7,977.65/11,009.59 = 4,440.78/x
  3. Step 3: Cross multiply
    7,977.65x = 11,009.59 × 4,440.78
  4. Step 4: Simplify right side
    7,977.65x = 48,891,155.98
  5. Step 5: Solve for x
    x = 48,891,155.98/7,977.65
  6. Step 6: Final answer
    x = 6,128.52

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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.