Home / 1,587.03-2,380.20-491.10

Finding the Fourth Proportional to 1,587.03, 2,380.20 and 491.10

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Solution

The fourth proportional to 1,587.03, 2,380.20 and 491.10 is: 736.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.03 : 2,380.20 = 491.10 : x
  2. Step 2: Convert to fraction form
    1,587.03/2,380.20 = 491.10/x
  3. Step 3: Cross multiply
    1,587.03x = 2,380.20 × 491.10
  4. Step 4: Simplify right side
    1,587.03x = 1,168,916.22
  5. Step 5: Solve for x
    x = 1,168,916.22/1,587.03
  6. Step 6: Final answer
    x = 736.54

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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.