Home / 7,913.16-11,869.74-2,647.15

Finding the Fourth Proportional to 7,913.16, 11,869.74 and 2,647.15

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Solution

The fourth proportional to 7,913.16, 11,869.74 and 2,647.15 is: 3,970.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.16 : 11,869.74 = 2,647.15 : x
  2. Step 2: Convert to fraction form
    7,913.16/11,869.74 = 2,647.15/x
  3. Step 3: Cross multiply
    7,913.16x = 11,869.74 × 2,647.15
  4. Step 4: Simplify right side
    7,913.16x = 31,420,952.57
  5. Step 5: Solve for x
    x = 31,420,952.57/7,913.16
  6. Step 6: Final answer
    x = 3,970.72

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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.