Home / 8,619.57-12,931.92-2,776.23

Finding the Fourth Proportional to 8,619.57, 12,931.92 and 2,776.23

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Solution

The fourth proportional to 8,619.57, 12,931.92 and 2,776.23 is: 4,165.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.57 : 12,931.92 = 2,776.23 : x
  2. Step 2: Convert to fraction form
    8,619.57/12,931.92 = 2,776.23/x
  3. Step 3: Cross multiply
    8,619.57x = 12,931.92 × 2,776.23
  4. Step 4: Simplify right side
    8,619.57x = 35,901,984.26
  5. Step 5: Solve for x
    x = 35,901,984.26/8,619.57
  6. Step 6: Final answer
    x = 4,165.17

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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.