Home / 7,342.75-10,128.39-4,356.47

Finding the Fourth Proportional to 7,342.75, 10,128.39 and 4,356.47

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Solution

The fourth proportional to 7,342.75, 10,128.39 and 4,356.47 is: 6,009.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,342.75 : 10,128.39 = 4,356.47 : x
  2. Step 2: Convert to fraction form
    7,342.75/10,128.39 = 4,356.47/x
  3. Step 3: Cross multiply
    7,342.75x = 10,128.39 × 4,356.47
  4. Step 4: Simplify right side
    7,342.75x = 44,124,005.40
  5. Step 5: Solve for x
    x = 44,124,005.40/7,342.75
  6. Step 6: Final answer
    x = 6,009.19

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Half scale
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Double scale
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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.