Home / 1,613.52-2,226.40-914.80

Finding the Fourth Proportional to 1,613.52, 2,226.40 and 914.80

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Solution

The fourth proportional to 1,613.52, 2,226.40 and 914.80 is: 1,262.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,613.52 : 2,226.40 = 914.80 : x
  2. Step 2: Convert to fraction form
    1,613.52/2,226.40 = 914.80/x
  3. Step 3: Cross multiply
    1,613.52x = 2,226.40 × 914.80
  4. Step 4: Simplify right side
    1,613.52x = 2,036,710.72
  5. Step 5: Solve for x
    x = 2,036,710.72/1,613.52
  6. Step 6: Final answer
    x = 1,262.28

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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.