Home / 2,890.01-3,988.10-1,631.16

Finding the Fourth Proportional to 2,890.01, 3,988.10 and 1,631.16

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Solution

The fourth proportional to 2,890.01, 3,988.10 and 1,631.16 is: 2,250.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.01 : 3,988.10 = 1,631.16 : x
  2. Step 2: Convert to fraction form
    2,890.01/3,988.10 = 1,631.16/x
  3. Step 3: Cross multiply
    2,890.01x = 3,988.10 × 1,631.16
  4. Step 4: Simplify right side
    2,890.01x = 6,505,233.27
  5. Step 5: Solve for x
    x = 6,505,233.27/2,890.01
  6. Step 6: Final answer
    x = 2,250.94

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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.