Home / 1,542.96-2,131.12-1,307.68

Finding the Fourth Proportional to 1,542.96, 2,131.12 and 1,307.68

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Solution

The fourth proportional to 1,542.96, 2,131.12 and 1,307.68 is: 1,806.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.96 : 2,131.12 = 1,307.68 : x
  2. Step 2: Convert to fraction form
    1,542.96/2,131.12 = 1,307.68/x
  3. Step 3: Cross multiply
    1,542.96x = 2,131.12 × 1,307.68
  4. Step 4: Simplify right side
    1,542.96x = 2,786,823.00
  5. Step 5: Solve for x
    x = 2,786,823.00/1,542.96
  6. Step 6: Final answer
    x = 1,806.15

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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.