Home / 8,439.74-12,643.49-4,730.75

Finding the Fourth Proportional to 8,439.74, 12,643.49 and 4,730.75

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Solution

The fourth proportional to 8,439.74, 12,643.49 and 4,730.75 is: 7,087.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.74 : 12,643.49 = 4,730.75 : x
  2. Step 2: Convert to fraction form
    8,439.74/12,643.49 = 4,730.75/x
  3. Step 3: Cross multiply
    8,439.74x = 12,643.49 × 4,730.75
  4. Step 4: Simplify right side
    8,439.74x = 59,813,257.46
  5. Step 5: Solve for x
    x = 59,813,257.46/8,439.74
  6. Step 6: Final answer
    x = 7,087.09

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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.