Home / 1,607.27-2,218.11-977.68

Finding the Fourth Proportional to 1,607.27, 2,218.11 and 977.68

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Solution

The fourth proportional to 1,607.27, 2,218.11 and 977.68 is: 1,349.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,607.27 : 2,218.11 = 977.68 : x
  2. Step 2: Convert to fraction form
    1,607.27/2,218.11 = 977.68/x
  3. Step 3: Cross multiply
    1,607.27x = 2,218.11 × 977.68
  4. Step 4: Simplify right side
    1,607.27x = 2,168,600.89
  5. Step 5: Solve for x
    x = 2,168,600.89/1,607.27
  6. Step 6: Final answer
    x = 1,349.25

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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.