Home / 9,130.66-12,600.32-5,151.76

Finding the Fourth Proportional to 9,130.66, 12,600.32 and 5,151.76

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Solution

The fourth proportional to 9,130.66, 12,600.32 and 5,151.76 is: 7,109.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,130.66 : 12,600.32 = 5,151.76 : x
  2. Step 2: Convert to fraction form
    9,130.66/12,600.32 = 5,151.76/x
  3. Step 3: Cross multiply
    9,130.66x = 12,600.32 × 5,151.76
  4. Step 4: Simplify right side
    9,130.66x = 64,913,824.56
  5. Step 5: Solve for x
    x = 64,913,824.56/9,130.66
  6. Step 6: Final answer
    x = 7,109.43

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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.