Home / 9,985.08-13,779.26-5,447.72

Finding the Fourth Proportional to 9,985.08, 13,779.26 and 5,447.72

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Solution

The fourth proportional to 9,985.08, 13,779.26 and 5,447.72 is: 7,517.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,985.08 : 13,779.26 = 5,447.72 : x
  2. Step 2: Convert to fraction form
    9,985.08/13,779.26 = 5,447.72/x
  3. Step 3: Cross multiply
    9,985.08x = 13,779.26 × 5,447.72
  4. Step 4: Simplify right side
    9,985.08x = 75,065,550.29
  5. Step 5: Solve for x
    x = 75,065,550.29/9,985.08
  6. Step 6: Final answer
    x = 7,517.77

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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.