Home / 8,176.32-12,319.11-7,397.31

Finding the Fourth Proportional to 8,176.32, 12,319.11 and 7,397.31

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Solution

The fourth proportional to 8,176.32, 12,319.11 and 7,397.31 is: 11,145.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,176.32 : 12,319.11 = 7,397.31 : x
  2. Step 2: Convert to fraction form
    8,176.32/12,319.11 = 7,397.31/x
  3. Step 3: Cross multiply
    8,176.32x = 12,319.11 × 7,397.31
  4. Step 4: Simplify right side
    8,176.32x = 91,128,275.59
  5. Step 5: Solve for x
    x = 91,128,275.59/8,176.32
  6. Step 6: Final answer
    x = 11,145.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.