Home / 1,440.13-2,160.33-574.51

Finding the Fourth Proportional to 1,440.13, 2,160.33 and 574.51

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Solution

The fourth proportional to 1,440.13, 2,160.33 and 574.51 is: 861.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.13 : 2,160.33 = 574.51 : x
  2. Step 2: Convert to fraction form
    1,440.13/2,160.33 = 574.51/x
  3. Step 3: Cross multiply
    1,440.13x = 2,160.33 × 574.51
  4. Step 4: Simplify right side
    1,440.13x = 1,241,131.19
  5. Step 5: Solve for x
    x = 1,241,131.19/1,440.13
  6. Step 6: Final answer
    x = 861.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.