Home / 8,428.32-11,631.60-5,402.16

Finding the Fourth Proportional to 8,428.32, 11,631.60 and 5,402.16

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Solution

The fourth proportional to 8,428.32, 11,631.60 and 5,402.16 is: 7,455.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.32 : 11,631.60 = 5,402.16 : x
  2. Step 2: Convert to fraction form
    8,428.32/11,631.60 = 5,402.16/x
  3. Step 3: Cross multiply
    8,428.32x = 11,631.60 × 5,402.16
  4. Step 4: Simplify right side
    8,428.32x = 62,835,764.26
  5. Step 5: Solve for x
    x = 62,835,764.26/8,428.32
  6. Step 6: Final answer
    x = 7,455.31

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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.