Home / 1,587.28-2,190.30-888.52

Finding the Fourth Proportional to 1,587.28, 2,190.30 and 888.52

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Solution

The fourth proportional to 1,587.28, 2,190.30 and 888.52 is: 1,226.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.28 : 2,190.30 = 888.52 : x
  2. Step 2: Convert to fraction form
    1,587.28/2,190.30 = 888.52/x
  3. Step 3: Cross multiply
    1,587.28x = 2,190.30 × 888.52
  4. Step 4: Simplify right side
    1,587.28x = 1,946,125.36
  5. Step 5: Solve for x
    x = 1,946,125.36/1,587.28
  6. Step 6: Final answer
    x = 1,226.08

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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.