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Finding the Fourth Proportional to 3,340.76, 5,007.51 and 1,779.19

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Solution

The fourth proportional to 3,340.76, 5,007.51 and 1,779.19 is: 2,666.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,340.76 : 5,007.51 = 1,779.19 : x
  2. Step 2: Convert to fraction form
    3,340.76/5,007.51 = 1,779.19/x
  3. Step 3: Cross multiply
    3,340.76x = 5,007.51 × 1,779.19
  4. Step 4: Simplify right side
    3,340.76x = 8,909,299.20
  5. Step 5: Solve for x
    x = 8,909,299.20/3,340.76
  6. Step 6: Final answer
    x = 2,666.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.