Home / 2,280.80-3,146.37-1,534.79

Finding the Fourth Proportional to 2,280.80, 3,146.37 and 1,534.79

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Solution

The fourth proportional to 2,280.80, 3,146.37 and 1,534.79 is: 2,117.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280.80 : 3,146.37 = 1,534.79 : x
  2. Step 2: Convert to fraction form
    2,280.80/3,146.37 = 1,534.79/x
  3. Step 3: Cross multiply
    2,280.80x = 3,146.37 × 1,534.79
  4. Step 4: Simplify right side
    2,280.80x = 4,829,017.21
  5. Step 5: Solve for x
    x = 4,829,017.21/2,280.80
  6. Step 6: Final answer
    x = 2,117.25

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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.