Home / 1,649.32-2,275.94-986.17

Finding the Fourth Proportional to 1,649.32, 2,275.94 and 986.17

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Solution

The fourth proportional to 1,649.32, 2,275.94 and 986.17 is: 1,360.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,649.32 : 2,275.94 = 986.17 : x
  2. Step 2: Convert to fraction form
    1,649.32/2,275.94 = 986.17/x
  3. Step 3: Cross multiply
    1,649.32x = 2,275.94 × 986.17
  4. Step 4: Simplify right side
    1,649.32x = 2,244,463.75
  5. Step 5: Solve for x
    x = 2,244,463.75/1,649.32
  6. Step 6: Final answer
    x = 1,360.84

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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.