Home / 1,572.19-2,169.27-908.93

Finding the Fourth Proportional to 1,572.19, 2,169.27 and 908.93

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Solution

The fourth proportional to 1,572.19, 2,169.27 and 908.93 is: 1,254.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.19 : 2,169.27 = 908.93 : x
  2. Step 2: Convert to fraction form
    1,572.19/2,169.27 = 908.93/x
  3. Step 3: Cross multiply
    1,572.19x = 2,169.27 × 908.93
  4. Step 4: Simplify right side
    1,572.19x = 1,971,707.80
  5. Step 5: Solve for x
    x = 1,971,707.80/1,572.19
  6. Step 6: Final answer
    x = 1,254.11

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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.