Home / 2,167.18-2,990.74-1,316.19

Finding the Fourth Proportional to 2,167.18, 2,990.74 and 1,316.19

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Solution

The fourth proportional to 2,167.18, 2,990.74 and 1,316.19 is: 1,816.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.18 : 2,990.74 = 1,316.19 : x
  2. Step 2: Convert to fraction form
    2,167.18/2,990.74 = 1,316.19/x
  3. Step 3: Cross multiply
    2,167.18x = 2,990.74 × 1,316.19
  4. Step 4: Simplify right side
    2,167.18x = 3,936,375.50
  5. Step 5: Solve for x
    x = 3,936,375.50/2,167.18
  6. Step 6: Final answer
    x = 1,816.36

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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.