Home / 1,345.12-2,017.68-1,058.08

Finding the Fourth Proportional to 1,345.12, 2,017.68 and 1,058.08

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Solution

The fourth proportional to 1,345.12, 2,017.68 and 1,058.08 is: 1,587.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345.12 : 2,017.68 = 1,058.08 : x
  2. Step 2: Convert to fraction form
    1,345.12/2,017.68 = 1,058.08/x
  3. Step 3: Cross multiply
    1,345.12x = 2,017.68 × 1,058.08
  4. Step 4: Simplify right side
    1,345.12x = 2,134,866.85
  5. Step 5: Solve for x
    x = 2,134,866.85/1,345.12
  6. Step 6: Final answer
    x = 1,587.12

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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.