Home / 8,705.10-12,011.68-5,722.14

Finding the Fourth Proportional to 8,705.10, 12,011.68 and 5,722.14

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Solution

The fourth proportional to 8,705.10, 12,011.68 and 5,722.14 is: 7,895.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.10 : 12,011.68 = 5,722.14 : x
  2. Step 2: Convert to fraction form
    8,705.10/12,011.68 = 5,722.14/x
  3. Step 3: Cross multiply
    8,705.10x = 12,011.68 × 5,722.14
  4. Step 4: Simplify right side
    8,705.10x = 68,732,514.60
  5. Step 5: Solve for x
    x = 68,732,514.60/8,705.10
  6. Step 6: Final answer
    x = 7,895.66

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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.