Home / 5,008.40-6,909.28-3,240.58

Finding the Fourth Proportional to 5,008.40, 6,909.28 and 3,240.58

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Solution

The fourth proportional to 5,008.40, 6,909.28 and 3,240.58 is: 4,470.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,008.40 : 6,909.28 = 3,240.58 : x
  2. Step 2: Convert to fraction form
    5,008.40/6,909.28 = 3,240.58/x
  3. Step 3: Cross multiply
    5,008.40x = 6,909.28 × 3,240.58
  4. Step 4: Simplify right side
    5,008.40x = 22,390,074.58
  5. Step 5: Solve for x
    x = 22,390,074.58/5,008.40
  6. Step 6: Final answer
    x = 4,470.50

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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.