Home / 2,487.02-3,730.55-638.15

Finding the Fourth Proportional to 2,487.02, 3,730.55 and 638.15

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Solution

The fourth proportional to 2,487.02, 3,730.55 and 638.15 is: 957.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.02 : 3,730.55 = 638.15 : x
  2. Step 2: Convert to fraction form
    2,487.02/3,730.55 = 638.15/x
  3. Step 3: Cross multiply
    2,487.02x = 3,730.55 × 638.15
  4. Step 4: Simplify right side
    2,487.02x = 2,380,628.64
  5. Step 5: Solve for x
    x = 2,380,628.64/2,487.02
  6. Step 6: Final answer
    x = 957.22

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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.