Home / 5,909.12-8,148.90-3,888.92

Finding the Fourth Proportional to 5,909.12, 8,148.90 and 3,888.92

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Solution

The fourth proportional to 5,909.12, 8,148.90 and 3,888.92 is: 5,362.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,909.12 : 8,148.90 = 3,888.92 : x
  2. Step 2: Convert to fraction form
    5,909.12/8,148.90 = 3,888.92/x
  3. Step 3: Cross multiply
    5,909.12x = 8,148.90 × 3,888.92
  4. Step 4: Simplify right side
    5,909.12x = 31,690,420.19
  5. Step 5: Solve for x
    x = 31,690,420.19/5,909.12
  6. Step 6: Final answer
    x = 5,362.97

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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.