Home / 5,747.40-8,621.30-1,587.72

Finding the Fourth Proportional to 5,747.40, 8,621.30 and 1,587.72

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Solution

The fourth proportional to 5,747.40, 8,621.30 and 1,587.72 is: 2,381.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,747.40 : 8,621.30 = 1,587.72 : x
  2. Step 2: Convert to fraction form
    5,747.40/8,621.30 = 1,587.72/x
  3. Step 3: Cross multiply
    5,747.40x = 8,621.30 × 1,587.72
  4. Step 4: Simplify right side
    5,747.40x = 13,688,210.44
  5. Step 5: Solve for x
    x = 13,688,210.44/5,747.40
  6. Step 6: Final answer
    x = 2,381.64

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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.