Home / 5,638.71-7,779.96-3,646.11

Finding the Fourth Proportional to 5,638.71, 7,779.96 and 3,646.11

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Solution

The fourth proportional to 5,638.71, 7,779.96 and 3,646.11 is: 5,030.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.71 : 7,779.96 = 3,646.11 : x
  2. Step 2: Convert to fraction form
    5,638.71/7,779.96 = 3,646.11/x
  3. Step 3: Cross multiply
    5,638.71x = 7,779.96 × 3,646.11
  4. Step 4: Simplify right side
    5,638.71x = 28,366,589.96
  5. Step 5: Solve for x
    x = 28,366,589.96/5,638.71
  6. Step 6: Final answer
    x = 5,030.69

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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.