Home / 5,643.18-7,779.44-3,959.34

Finding the Fourth Proportional to 5,643.18, 7,779.44 and 3,959.34

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Solution

The fourth proportional to 5,643.18, 7,779.44 and 3,959.34 is: 5,458.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,643.18 : 7,779.44 = 3,959.34 : x
  2. Step 2: Convert to fraction form
    5,643.18/7,779.44 = 3,959.34/x
  3. Step 3: Cross multiply
    5,643.18x = 7,779.44 × 3,959.34
  4. Step 4: Simplify right side
    5,643.18x = 30,801,447.97
  5. Step 5: Solve for x
    x = 30,801,447.97/5,643.18
  6. Step 6: Final answer
    x = 5,458.17

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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.