Home / 2,890.16-3,988.26-1,631.42

Finding the Fourth Proportional to 2,890.16, 3,988.26 and 1,631.42

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Solution

The fourth proportional to 2,890.16, 3,988.26 and 1,631.42 is: 2,251.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.16 : 3,988.26 = 1,631.42 : x
  2. Step 2: Convert to fraction form
    2,890.16/3,988.26 = 1,631.42/x
  3. Step 3: Cross multiply
    2,890.16x = 3,988.26 × 1,631.42
  4. Step 4: Simplify right side
    2,890.16x = 6,506,527.13
  5. Step 5: Solve for x
    x = 6,506,527.13/2,890.16
  6. Step 6: Final answer
    x = 2,251.27

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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.