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Finding the Fourth Proportional to 2,670.74, 4,005.62 and 723.10

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Solution

The fourth proportional to 2,670.74, 4,005.62 and 723.10 is: 1,084.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,670.74 : 4,005.62 = 723.10 : x
  2. Step 2: Convert to fraction form
    2,670.74/4,005.62 = 723.10/x
  3. Step 3: Cross multiply
    2,670.74x = 4,005.62 × 723.10
  4. Step 4: Simplify right side
    2,670.74x = 2,896,463.82
  5. Step 5: Solve for x
    x = 2,896,463.82/2,670.74
  6. Step 6: Final answer
    x = 1,084.52

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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.