Home / 9,128.81-12,597.66-5,151.21

Finding the Fourth Proportional to 9,128.81, 12,597.66 and 5,151.21

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Solution

The fourth proportional to 9,128.81, 12,597.66 and 5,151.21 is: 7,108.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.81 : 12,597.66 = 5,151.21 : x
  2. Step 2: Convert to fraction form
    9,128.81/12,597.66 = 5,151.21/x
  3. Step 3: Cross multiply
    9,128.81x = 12,597.66 × 5,151.21
  4. Step 4: Simplify right side
    9,128.81x = 64,893,192.17
  5. Step 5: Solve for x
    x = 64,893,192.17/9,128.81
  6. Step 6: Final answer
    x = 7,108.62

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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.