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Finding the Fourth Proportional to 1,647.68, 2,271.84 and 1,058.24

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Solution

The fourth proportional to 1,647.68, 2,271.84 and 1,058.24 is: 1,459.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.68 : 2,271.84 = 1,058.24 : x
  2. Step 2: Convert to fraction form
    1,647.68/2,271.84 = 1,058.24/x
  3. Step 3: Cross multiply
    1,647.68x = 2,271.84 × 1,058.24
  4. Step 4: Simplify right side
    1,647.68x = 2,404,151.96
  5. Step 5: Solve for x
    x = 2,404,151.96/1,647.68
  6. Step 6: Final answer
    x = 1,459.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.