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Finding the Fourth Proportional to 3,607.48, 4,978.74 and 2,191.24

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Solution

The fourth proportional to 3,607.48, 4,978.74 and 2,191.24 is: 3,024.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,607.48 : 4,978.74 = 2,191.24 : x
  2. Step 2: Convert to fraction form
    3,607.48/4,978.74 = 2,191.24/x
  3. Step 3: Cross multiply
    3,607.48x = 4,978.74 × 2,191.24
  4. Step 4: Simplify right side
    3,607.48x = 10,909,614.24
  5. Step 5: Solve for x
    x = 10,909,614.24/3,607.48
  6. Step 6: Final answer
    x = 3,024.16

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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.