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Finding the Fourth Proportional to 1,607.60, 2,218.00 and 1,047.87

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Solution

The fourth proportional to 1,607.60, 2,218.00 and 1,047.87 is: 1,445.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,607.60 : 2,218.00 = 1,047.87 : x
  2. Step 2: Convert to fraction form
    1,607.60/2,218.00 = 1,047.87/x
  3. Step 3: Cross multiply
    1,607.60x = 2,218.00 × 1,047.87
  4. Step 4: Simplify right side
    1,607.60x = 2,324,168.77
  5. Step 5: Solve for x
    x = 2,324,168.77/1,607.60
  6. Step 6: Final answer
    x = 1,445.74

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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.