Home / 1,430.26-2,131.87-1,382.88

Finding the Fourth Proportional to 1,430.26, 2,131.87 and 1,382.88

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Solution

The fourth proportional to 1,430.26, 2,131.87 and 1,382.88 is: 2,061.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.26 : 2,131.87 = 1,382.88 : x
  2. Step 2: Convert to fraction form
    1,430.26/2,131.87 = 1,382.88/x
  3. Step 3: Cross multiply
    1,430.26x = 2,131.87 × 1,382.88
  4. Step 4: Simplify right side
    1,430.26x = 2,948,102.81
  5. Step 5: Solve for x
    x = 2,948,102.81/1,430.26
  6. Step 6: Final answer
    x = 2,061.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.