Home / 7,042.08-9,718.20-3,898.56

Finding the Fourth Proportional to 7,042.08, 9,718.20 and 3,898.56

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Solution

The fourth proportional to 7,042.08, 9,718.20 and 3,898.56 is: 5,380.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,042.08 : 9,718.20 = 3,898.56 : x
  2. Step 2: Convert to fraction form
    7,042.08/9,718.20 = 3,898.56/x
  3. Step 3: Cross multiply
    7,042.08x = 9,718.20 × 3,898.56
  4. Step 4: Simplify right side
    7,042.08x = 37,886,985.79
  5. Step 5: Solve for x
    x = 37,886,985.79/7,042.08
  6. Step 6: Final answer
    x = 5,380.08

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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.