Home / 2,117.60-2,922.28-1,186.08

Finding the Fourth Proportional to 2,117.60, 2,922.28 and 1,186.08

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Solution

The fourth proportional to 2,117.60, 2,922.28 and 1,186.08 is: 1,636.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.60 : 2,922.28 = 1,186.08 : x
  2. Step 2: Convert to fraction form
    2,117.60/2,922.28 = 1,186.08/x
  3. Step 3: Cross multiply
    2,117.60x = 2,922.28 × 1,186.08
  4. Step 4: Simplify right side
    2,117.60x = 3,466,057.86
  5. Step 5: Solve for x
    x = 3,466,057.86/2,117.60
  6. Step 6: Final answer
    x = 1,636.79

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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.