Home / 3,779.28-5,666.84-1,313.90

Finding the Fourth Proportional to 3,779.28, 5,666.84 and 1,313.90

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Solution

The fourth proportional to 3,779.28, 5,666.84 and 1,313.90 is: 1,970.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.28 : 5,666.84 = 1,313.90 : x
  2. Step 2: Convert to fraction form
    3,779.28/5,666.84 = 1,313.90/x
  3. Step 3: Cross multiply
    3,779.28x = 5,666.84 × 1,313.90
  4. Step 4: Simplify right side
    3,779.28x = 7,445,661.08
  5. Step 5: Solve for x
    x = 7,445,661.08/3,779.28
  6. Step 6: Final answer
    x = 1,970.13

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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.