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Finding the Fourth Proportional to 5,491.32, 7,579.20 and 3,501.42

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Solution

The fourth proportional to 5,491.32, 7,579.20 and 3,501.42 is: 4,832.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,491.32 : 7,579.20 = 3,501.42 : x
  2. Step 2: Convert to fraction form
    5,491.32/7,579.20 = 3,501.42/x
  3. Step 3: Cross multiply
    5,491.32x = 7,579.20 × 3,501.42
  4. Step 4: Simplify right side
    5,491.32x = 26,537,962.46
  5. Step 5: Solve for x
    x = 26,537,962.46/5,491.32
  6. Step 6: Final answer
    x = 4,832.71

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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.