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Finding the Fourth Proportional to 2,888.64, 4,331.48 and 1,039.46

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Solution

The fourth proportional to 2,888.64, 4,331.48 and 1,039.46 is: 1,558.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.64 : 4,331.48 = 1,039.46 : x
  2. Step 2: Convert to fraction form
    2,888.64/4,331.48 = 1,039.46/x
  3. Step 3: Cross multiply
    2,888.64x = 4,331.48 × 1,039.46
  4. Step 4: Simplify right side
    2,888.64x = 4,502,400.20
  5. Step 5: Solve for x
    x = 4,502,400.20/2,888.64
  6. Step 6: Final answer
    x = 1,558.66

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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.