Home / 6,870.90-10,307.12-2,191.12

Finding the Fourth Proportional to 6,870.90, 10,307.12 and 2,191.12

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Solution

The fourth proportional to 6,870.90, 10,307.12 and 2,191.12 is: 3,286.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,870.90 : 10,307.12 = 2,191.12 : x
  2. Step 2: Convert to fraction form
    6,870.90/10,307.12 = 2,191.12/x
  3. Step 3: Cross multiply
    6,870.90x = 10,307.12 × 2,191.12
  4. Step 4: Simplify right side
    6,870.90x = 22,584,136.77
  5. Step 5: Solve for x
    x = 22,584,136.77/6,870.90
  6. Step 6: Final answer
    x = 3,286.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.