Home / 2,117.48-2,921.97-1,173.18

Finding the Fourth Proportional to 2,117.48, 2,921.97 and 1,173.18

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Solution

The fourth proportional to 2,117.48, 2,921.97 and 1,173.18 is: 1,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.48 : 2,921.97 = 1,173.18 : x
  2. Step 2: Convert to fraction form
    2,117.48/2,921.97 = 1,173.18/x
  3. Step 3: Cross multiply
    2,117.48x = 2,921.97 × 1,173.18
  4. Step 4: Simplify right side
    2,117.48x = 3,427,996.76
  5. Step 5: Solve for x
    x = 3,427,996.76/2,117.48
  6. Step 6: Final answer
    x = 1,618.90

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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.