Home / 8,972.10-12,368.67-6,311.25

Finding the Fourth Proportional to 8,972.10, 12,368.67 and 6,311.25

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Solution

The fourth proportional to 8,972.10, 12,368.67 and 6,311.25 is: 8,700.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.10 : 12,368.67 = 6,311.25 : x
  2. Step 2: Convert to fraction form
    8,972.10/12,368.67 = 6,311.25/x
  3. Step 3: Cross multiply
    8,972.10x = 12,368.67 × 6,311.25
  4. Step 4: Simplify right side
    8,972.10x = 78,061,830.70
  5. Step 5: Solve for x
    x = 78,061,830.70/8,972.10
  6. Step 6: Final answer
    x = 8,700.50

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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.