Home / 8,319.29-12,472.77-3,931.62

Finding the Fourth Proportional to 8,319.29, 12,472.77 and 3,931.62

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Solution

The fourth proportional to 8,319.29, 12,472.77 and 3,931.62 is: 5,894.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.29 : 12,472.77 = 3,931.62 : x
  2. Step 2: Convert to fraction form
    8,319.29/12,472.77 = 3,931.62/x
  3. Step 3: Cross multiply
    8,319.29x = 12,472.77 × 3,931.62
  4. Step 4: Simplify right side
    8,319.29x = 49,038,191.99
  5. Step 5: Solve for x
    x = 49,038,191.99/8,319.29
  6. Step 6: Final answer
    x = 5,894.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.