Home / 1,572.13-2,169.66-974.62

Finding the Fourth Proportional to 1,572.13, 2,169.66 and 974.62

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Solution

The fourth proportional to 1,572.13, 2,169.66 and 974.62 is: 1,345.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.13 : 2,169.66 = 974.62 : x
  2. Step 2: Convert to fraction form
    1,572.13/2,169.66 = 974.62/x
  3. Step 3: Cross multiply
    1,572.13x = 2,169.66 × 974.62
  4. Step 4: Simplify right side
    1,572.13x = 2,114,594.03
  5. Step 5: Solve for x
    x = 2,114,594.03/1,572.13
  6. Step 6: Final answer
    x = 1,345.05

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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.