Home / 1,280.77-1,768.06-966.17

Finding the Fourth Proportional to 1,280.77, 1,768.06 and 966.17

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Solution

The fourth proportional to 1,280.77, 1,768.06 and 966.17 is: 1,333.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280.77 : 1,768.06 = 966.17 : x
  2. Step 2: Convert to fraction form
    1,280.77/1,768.06 = 966.17/x
  3. Step 3: Cross multiply
    1,280.77x = 1,768.06 × 966.17
  4. Step 4: Simplify right side
    1,280.77x = 1,708,246.53
  5. Step 5: Solve for x
    x = 1,708,246.53/1,280.77
  6. Step 6: Final answer
    x = 1,333.77

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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.