Home / 1,430.08-1,965.92-1,230.18

Finding the Fourth Proportional to 1,430.08, 1,965.92 and 1,230.18

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Solution

The fourth proportional to 1,430.08, 1,965.92 and 1,230.18 is: 1,691.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.08 : 1,965.92 = 1,230.18 : x
  2. Step 2: Convert to fraction form
    1,430.08/1,965.92 = 1,230.18/x
  3. Step 3: Cross multiply
    1,430.08x = 1,965.92 × 1,230.18
  4. Step 4: Simplify right side
    1,430.08x = 2,418,438.54
  5. Step 5: Solve for x
    x = 2,418,438.54/1,430.08
  6. Step 6: Final answer
    x = 1,691.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.