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Finding the Fourth Proportional to 8,572, 11,821.24 and 5,590.12

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Solution

The fourth proportional to 8,572, 11,821.24 and 5,590.12 is: 7,709.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572 : 11,821.24 = 5,590.12 : x
  2. Step 2: Convert to fraction form
    8,572/11,821.24 = 5,590.12/x
  3. Step 3: Cross multiply
    8,572x = 11,821.24 × 5,590.12
  4. Step 4: Simplify right side
    8,572x = 66,082,150.15
  5. Step 5: Solve for x
    x = 66,082,150.15/8,572
  6. Step 6: Final answer
    x = 7,709.07

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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.