Home / 1,609.65-2,221.85-946.47

Finding the Fourth Proportional to 1,609.65, 2,221.85 and 946.47

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Solution

The fourth proportional to 1,609.65, 2,221.85 and 946.47 is: 1,306.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.65 : 2,221.85 = 946.47 : x
  2. Step 2: Convert to fraction form
    1,609.65/2,221.85 = 946.47/x
  3. Step 3: Cross multiply
    1,609.65x = 2,221.85 × 946.47
  4. Step 4: Simplify right side
    1,609.65x = 2,102,909.64
  5. Step 5: Solve for x
    x = 2,102,909.64/1,609.65
  6. Step 6: Final answer
    x = 1,306.44

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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.