Home / 8,779.96-12,115.26-5,242.50

Finding the Fourth Proportional to 8,779.96, 12,115.26 and 5,242.50

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Solution

The fourth proportional to 8,779.96, 12,115.26 and 5,242.50 is: 7,234.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.96 : 12,115.26 = 5,242.50 : x
  2. Step 2: Convert to fraction form
    8,779.96/12,115.26 = 5,242.50/x
  3. Step 3: Cross multiply
    8,779.96x = 12,115.26 × 5,242.50
  4. Step 4: Simplify right side
    8,779.96x = 63,514,250.55
  5. Step 5: Solve for x
    x = 63,514,250.55/8,779.96
  6. Step 6: Final answer
    x = 7,234.00

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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.