Home / 1,285.16-1,777.01-1,264.30

Finding the Fourth Proportional to 1,285.16, 1,777.01 and 1,264.30

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Solution

The fourth proportional to 1,285.16, 1,777.01 and 1,264.30 is: 1,748.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.16 : 1,777.01 = 1,264.30 : x
  2. Step 2: Convert to fraction form
    1,285.16/1,777.01 = 1,264.30/x
  3. Step 3: Cross multiply
    1,285.16x = 1,777.01 × 1,264.30
  4. Step 4: Simplify right side
    1,285.16x = 2,246,672.46
  5. Step 5: Solve for x
    x = 2,246,672.46/1,285.16
  6. Step 6: Final answer
    x = 1,748.17

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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.