Home / 1,557.62-2,333.67-1,388.13

Finding the Fourth Proportional to 1,557.62, 2,333.67 and 1,388.13

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Solution

The fourth proportional to 1,557.62, 2,333.67 and 1,388.13 is: 2,079.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.62 : 2,333.67 = 1,388.13 : x
  2. Step 2: Convert to fraction form
    1,557.62/2,333.67 = 1,388.13/x
  3. Step 3: Cross multiply
    1,557.62x = 2,333.67 × 1,388.13
  4. Step 4: Simplify right side
    1,557.62x = 3,239,437.34
  5. Step 5: Solve for x
    x = 3,239,437.34/1,557.62
  6. Step 6: Final answer
    x = 2,079.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.