Home / 1,265.24-1,885.05-1,203.20

Finding the Fourth Proportional to 1,265.24, 1,885.05 and 1,203.20

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Solution

The fourth proportional to 1,265.24, 1,885.05 and 1,203.20 is: 1,792.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.24 : 1,885.05 = 1,203.20 : x
  2. Step 2: Convert to fraction form
    1,265.24/1,885.05 = 1,203.20/x
  3. Step 3: Cross multiply
    1,265.24x = 1,885.05 × 1,203.20
  4. Step 4: Simplify right side
    1,265.24x = 2,268,092.16
  5. Step 5: Solve for x
    x = 2,268,092.16/1,265.24
  6. Step 6: Final answer
    x = 1,792.62

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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.