Home / 1,247.48-1,860.68-1,062.80

Finding the Fourth Proportional to 1,247.48, 1,860.68 and 1,062.80

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Solution

The fourth proportional to 1,247.48, 1,860.68 and 1,062.80 is: 1,585.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.48 : 1,860.68 = 1,062.80 : x
  2. Step 2: Convert to fraction form
    1,247.48/1,860.68 = 1,062.80/x
  3. Step 3: Cross multiply
    1,247.48x = 1,860.68 × 1,062.80
  4. Step 4: Simplify right side
    1,247.48x = 1,977,530.70
  5. Step 5: Solve for x
    x = 1,977,530.70/1,247.48
  6. Step 6: Final answer
    x = 1,585.22

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1.5x scale

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.