Home / 1,585.20-2,188.12-956.08

Finding the Fourth Proportional to 1,585.20, 2,188.12 and 956.08

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Solution

The fourth proportional to 1,585.20, 2,188.12 and 956.08 is: 1,319.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.20 : 2,188.12 = 956.08 : x
  2. Step 2: Convert to fraction form
    1,585.20/2,188.12 = 956.08/x
  3. Step 3: Cross multiply
    1,585.20x = 2,188.12 × 956.08
  4. Step 4: Simplify right side
    1,585.20x = 2,092,017.77
  5. Step 5: Solve for x
    x = 2,092,017.77/1,585.20
  6. Step 6: Final answer
    x = 1,319.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.