Home / 8,943.80-12,340.60-5,407.20

Finding the Fourth Proportional to 8,943.80, 12,340.60 and 5,407.20

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Solution

The fourth proportional to 8,943.80, 12,340.60 and 5,407.20 is: 7,460.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,943.80 : 12,340.60 = 5,407.20 : x
  2. Step 2: Convert to fraction form
    8,943.80/12,340.60 = 5,407.20/x
  3. Step 3: Cross multiply
    8,943.80x = 12,340.60 × 5,407.20
  4. Step 4: Simplify right side
    8,943.80x = 66,728,092.32
  5. Step 5: Solve for x
    x = 66,728,092.32/8,943.80
  6. Step 6: Final answer
    x = 7,460.82

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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.