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Finding the Fourth Proportional to 1,562.75, 2,157.53 and 974.08

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Solution

The fourth proportional to 1,562.75, 2,157.53 and 974.08 is: 1,344.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,562.75 : 2,157.53 = 974.08 : x
  2. Step 2: Convert to fraction form
    1,562.75/2,157.53 = 974.08/x
  3. Step 3: Cross multiply
    1,562.75x = 2,157.53 × 974.08
  4. Step 4: Simplify right side
    1,562.75x = 2,101,617.35
  5. Step 5: Solve for x
    x = 2,101,617.35/1,562.75
  6. Step 6: Final answer
    x = 1,344.82

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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.