Home / 9,011.25-12,438.90-6,779.57

Finding the Fourth Proportional to 9,011.25, 12,438.90 and 6,779.57

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Solution

The fourth proportional to 9,011.25, 12,438.90 and 6,779.57 is: 9,358.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,011.25 : 12,438.90 = 6,779.57 : x
  2. Step 2: Convert to fraction form
    9,011.25/12,438.90 = 6,779.57/x
  3. Step 3: Cross multiply
    9,011.25x = 12,438.90 × 6,779.57
  4. Step 4: Simplify right side
    9,011.25x = 84,330,331.08
  5. Step 5: Solve for x
    x = 84,330,331.08/9,011.25
  6. Step 6: Final answer
    x = 9,358.34

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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.