Home / 1,270.40-1,891.34-1,264.32

Finding the Fourth Proportional to 1,270.40, 1,891.34 and 1,264.32

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Solution

The fourth proportional to 1,270.40, 1,891.34 and 1,264.32 is: 1,882.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.40 : 1,891.34 = 1,264.32 : x
  2. Step 2: Convert to fraction form
    1,270.40/1,891.34 = 1,264.32/x
  3. Step 3: Cross multiply
    1,270.40x = 1,891.34 × 1,264.32
  4. Step 4: Simplify right side
    1,270.40x = 2,391,252.67
  5. Step 5: Solve for x
    x = 2,391,252.67/1,270.40
  6. Step 6: Final answer
    x = 1,882.29

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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.