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Finding the Fourth Proportional to 7,498.90, 10,347.78 and 4,354.78

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Solution

The fourth proportional to 7,498.90, 10,347.78 and 4,354.78 is: 6,009.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,498.90 : 10,347.78 = 4,354.78 : x
  2. Step 2: Convert to fraction form
    7,498.90/10,347.78 = 4,354.78/x
  3. Step 3: Cross multiply
    7,498.90x = 10,347.78 × 4,354.78
  4. Step 4: Simplify right side
    7,498.90x = 45,062,305.39
  5. Step 5: Solve for x
    x = 45,062,305.39/7,498.90
  6. Step 6: Final answer
    x = 6,009.19

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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.