Home / 9,130.85-12,600.65-5,042.78

Finding the Fourth Proportional to 9,130.85, 12,600.65 and 5,042.78

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Solution

The fourth proportional to 9,130.85, 12,600.65 and 5,042.78 is: 6,959.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,130.85 : 12,600.65 = 5,042.78 : x
  2. Step 2: Convert to fraction form
    9,130.85/12,600.65 = 5,042.78/x
  3. Step 3: Cross multiply
    9,130.85x = 12,600.65 × 5,042.78
  4. Step 4: Simplify right side
    9,130.85x = 63,542,305.81
  5. Step 5: Solve for x
    x = 63,542,305.81/9,130.85
  6. Step 6: Final answer
    x = 6,959.08

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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.