Home / 1,587.04-2,380.60-491.40

Finding the Fourth Proportional to 1,587.04, 2,380.60 and 491.40

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Solution

The fourth proportional to 1,587.04, 2,380.60 and 491.40 is: 737.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.04 : 2,380.60 = 491.40 : x
  2. Step 2: Convert to fraction form
    1,587.04/2,380.60 = 491.40/x
  3. Step 3: Cross multiply
    1,587.04x = 2,380.60 × 491.40
  4. Step 4: Simplify right side
    1,587.04x = 1,169,826.84
  5. Step 5: Solve for x
    x = 1,169,826.84/1,587.04
  6. Step 6: Final answer
    x = 737.11

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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.