Home / 2,888.13-4,331.40-1,038.90

Finding the Fourth Proportional to 2,888.13, 4,331.40 and 1,038.90

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Solution

The fourth proportional to 2,888.13, 4,331.40 and 1,038.90 is: 1,558.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.13 : 4,331.40 = 1,038.90 : x
  2. Step 2: Convert to fraction form
    2,888.13/4,331.40 = 1,038.90/x
  3. Step 3: Cross multiply
    2,888.13x = 4,331.40 × 1,038.90
  4. Step 4: Simplify right side
    2,888.13x = 4,499,891.46
  5. Step 5: Solve for x
    x = 4,499,891.46/2,888.13
  6. Step 6: Final answer
    x = 1,558.06

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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.