Home / 1,612.80-2,225.61-914.13

Finding the Fourth Proportional to 1,612.80, 2,225.61 and 914.13

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Solution

The fourth proportional to 1,612.80, 2,225.61 and 914.13 is: 1,261.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.80 : 2,225.61 = 914.13 : x
  2. Step 2: Convert to fraction form
    1,612.80/2,225.61 = 914.13/x
  3. Step 3: Cross multiply
    1,612.80x = 2,225.61 × 914.13
  4. Step 4: Simplify right side
    1,612.80x = 2,034,496.87
  5. Step 5: Solve for x
    x = 2,034,496.87/1,612.80
  6. Step 6: Final answer
    x = 1,261.47

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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.