Home / 9,118.46-12,575.72-6,290.35

Finding the Fourth Proportional to 9,118.46, 12,575.72 and 6,290.35

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Solution

The fourth proportional to 9,118.46, 12,575.72 and 6,290.35 is: 8,675.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.46 : 12,575.72 = 6,290.35 : x
  2. Step 2: Convert to fraction form
    9,118.46/12,575.72 = 6,290.35/x
  3. Step 3: Cross multiply
    9,118.46x = 12,575.72 × 6,290.35
  4. Step 4: Simplify right side
    9,118.46x = 79,105,617.42
  5. Step 5: Solve for x
    x = 79,105,617.42/9,118.46
  6. Step 6: Final answer
    x = 8,675.33

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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.