Home / 8,426.28-12,639.06-2,880.12

Finding the Fourth Proportional to 8,426.28, 12,639.06 and 2,880.12

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Solution

The fourth proportional to 8,426.28, 12,639.06 and 2,880.12 is: 4,320.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,426.28 : 12,639.06 = 2,880.12 : x
  2. Step 2: Convert to fraction form
    8,426.28/12,639.06 = 2,880.12/x
  3. Step 3: Cross multiply
    8,426.28x = 12,639.06 × 2,880.12
  4. Step 4: Simplify right side
    8,426.28x = 36,402,009.49
  5. Step 5: Solve for x
    x = 36,402,009.49/8,426.28
  6. Step 6: Final answer
    x = 4,320.06

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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.