Home / 1,319.40-1,977.12-1,058.04

Finding the Fourth Proportional to 1,319.40, 1,977.12 and 1,058.04

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Solution

The fourth proportional to 1,319.40, 1,977.12 and 1,058.04 is: 1,585.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.40 : 1,977.12 = 1,058.04 : x
  2. Step 2: Convert to fraction form
    1,319.40/1,977.12 = 1,058.04/x
  3. Step 3: Cross multiply
    1,319.40x = 1,977.12 × 1,058.04
  4. Step 4: Simplify right side
    1,319.40x = 2,091,872.04
  5. Step 5: Solve for x
    x = 2,091,872.04/1,319.40
  6. Step 6: Final answer
    x = 1,585.47

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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.