Home / 1,572.18-2,169.81-951.18

Finding the Fourth Proportional to 1,572.18, 2,169.81 and 951.18

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Solution

The fourth proportional to 1,572.18, 2,169.81 and 951.18 is: 1,312.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.18 : 2,169.81 = 951.18 : x
  2. Step 2: Convert to fraction form
    1,572.18/2,169.81 = 951.18/x
  3. Step 3: Cross multiply
    1,572.18x = 2,169.81 × 951.18
  4. Step 4: Simplify right side
    1,572.18x = 2,063,879.88
  5. Step 5: Solve for x
    x = 2,063,879.88/1,572.18
  6. Step 6: Final answer
    x = 1,312.75

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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.