Home / 7,042.48-9,718.18-3,898.74

Finding the Fourth Proportional to 7,042.48, 9,718.18 and 3,898.74

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Solution

The fourth proportional to 7,042.48, 9,718.18 and 3,898.74 is: 5,380.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,042.48 : 9,718.18 = 3,898.74 : x
  2. Step 2: Convert to fraction form
    7,042.48/9,718.18 = 3,898.74/x
  3. Step 3: Cross multiply
    7,042.48x = 9,718.18 × 3,898.74
  4. Step 4: Simplify right side
    7,042.48x = 37,888,657.09
  5. Step 5: Solve for x
    x = 37,888,657.09/7,042.48
  6. Step 6: Final answer
    x = 5,380.02

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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.