Home / 1,264.49-1,904.35-1,120.06

Finding the Fourth Proportional to 1,264.49, 1,904.35 and 1,120.06

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Solution

The fourth proportional to 1,264.49, 1,904.35 and 1,120.06 is: 1,686.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.49 : 1,904.35 = 1,120.06 : x
  2. Step 2: Convert to fraction form
    1,264.49/1,904.35 = 1,120.06/x
  3. Step 3: Cross multiply
    1,264.49x = 1,904.35 × 1,120.06
  4. Step 4: Simplify right side
    1,264.49x = 2,132,986.26
  5. Step 5: Solve for x
    x = 2,132,986.26/1,264.49
  6. Step 6: Final answer
    x = 1,686.84

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.