Home / 8,665.10-12,989.67-2,818.70

Finding the Fourth Proportional to 8,665.10, 12,989.67 and 2,818.70

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Solution

The fourth proportional to 8,665.10, 12,989.67 and 2,818.70 is: 4,225.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,665.10 : 12,989.67 = 2,818.70 : x
  2. Step 2: Convert to fraction form
    8,665.10/12,989.67 = 2,818.70/x
  3. Step 3: Cross multiply
    8,665.10x = 12,989.67 × 2,818.70
  4. Step 4: Simplify right side
    8,665.10x = 36,613,982.83
  5. Step 5: Solve for x
    x = 36,613,982.83/8,665.10
  6. Step 6: Final answer
    x = 4,225.45

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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.