Home / 1,428.48-2,132.16-1,418.40

Finding the Fourth Proportional to 1,428.48, 2,132.16 and 1,418.40

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Solution

The fourth proportional to 1,428.48, 2,132.16 and 1,418.40 is: 2,117.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428.48 : 2,132.16 = 1,418.40 : x
  2. Step 2: Convert to fraction form
    1,428.48/2,132.16 = 1,418.40/x
  3. Step 3: Cross multiply
    1,428.48x = 2,132.16 × 1,418.40
  4. Step 4: Simplify right side
    1,428.48x = 3,024,255.74
  5. Step 5: Solve for x
    x = 3,024,255.74/1,428.48
  6. Step 6: Final answer
    x = 2,117.11

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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.