Home / 1,572.29-2,169.21-934.07

Finding the Fourth Proportional to 1,572.29, 2,169.21 and 934.07

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Solution

The fourth proportional to 1,572.29, 2,169.21 and 934.07 is: 1,288.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.29 : 2,169.21 = 934.07 : x
  2. Step 2: Convert to fraction form
    1,572.29/2,169.21 = 934.07/x
  3. Step 3: Cross multiply
    1,572.29x = 2,169.21 × 934.07
  4. Step 4: Simplify right side
    1,572.29x = 2,026,193.98
  5. Step 5: Solve for x
    x = 2,026,193.98/1,572.29
  6. Step 6: Final answer
    x = 1,288.69

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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.