Home / 8,619.18-12,931.55-4,233.56

Finding the Fourth Proportional to 8,619.18, 12,931.55 and 4,233.56

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Solution

The fourth proportional to 8,619.18, 12,931.55 and 4,233.56 is: 6,351.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.18 : 12,931.55 = 4,233.56 : x
  2. Step 2: Convert to fraction form
    8,619.18/12,931.55 = 4,233.56/x
  3. Step 3: Cross multiply
    8,619.18x = 12,931.55 × 4,233.56
  4. Step 4: Simplify right side
    8,619.18x = 54,746,459.24
  5. Step 5: Solve for x
    x = 54,746,459.24/8,619.18
  6. Step 6: Final answer
    x = 6,351.70

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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.