Home / 1,264.40-1,889.93-1,098.56

Finding the Fourth Proportional to 1,264.40, 1,889.93 and 1,098.56

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Solution

The fourth proportional to 1,264.40, 1,889.93 and 1,098.56 is: 1,642.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.40 : 1,889.93 = 1,098.56 : x
  2. Step 2: Convert to fraction form
    1,264.40/1,889.93 = 1,098.56/x
  3. Step 3: Cross multiply
    1,264.40x = 1,889.93 × 1,098.56
  4. Step 4: Simplify right side
    1,264.40x = 2,076,186.56
  5. Step 5: Solve for x
    x = 2,076,186.56/1,264.40
  6. Step 6: Final answer
    x = 1,642.04

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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.