Home / 3,177.76-4,385.32-1,780.50

Finding the Fourth Proportional to 3,177.76, 4,385.32 and 1,780.50

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Solution

The fourth proportional to 3,177.76, 4,385.32 and 1,780.50 is: 2,457.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.76 : 4,385.32 = 1,780.50 : x
  2. Step 2: Convert to fraction form
    3,177.76/4,385.32 = 1,780.50/x
  3. Step 3: Cross multiply
    3,177.76x = 4,385.32 × 1,780.50
  4. Step 4: Simplify right side
    3,177.76x = 7,808,062.26
  5. Step 5: Solve for x
    x = 7,808,062.26/3,177.76
  6. Step 6: Final answer
    x = 2,457.10

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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.