Home / 1,613.68-2,226.40-914.88

Finding the Fourth Proportional to 1,613.68, 2,226.40 and 914.88

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Solution

The fourth proportional to 1,613.68, 2,226.40 and 914.88 is: 1,262.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,613.68 : 2,226.40 = 914.88 : x
  2. Step 2: Convert to fraction form
    1,613.68/2,226.40 = 914.88/x
  3. Step 3: Cross multiply
    1,613.68x = 2,226.40 × 914.88
  4. Step 4: Simplify right side
    1,613.68x = 2,036,888.83
  5. Step 5: Solve for x
    x = 2,036,888.83/1,613.68
  6. Step 6: Final answer
    x = 1,262.26

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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.