Home / 7,280.39-10,920.51-3,116.87

Finding the Fourth Proportional to 7,280.39, 10,920.51 and 3,116.87

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Solution

The fourth proportional to 7,280.39, 10,920.51 and 3,116.87 is: 4,675.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.39 : 10,920.51 = 3,116.87 : x
  2. Step 2: Convert to fraction form
    7,280.39/10,920.51 = 3,116.87/x
  3. Step 3: Cross multiply
    7,280.39x = 10,920.51 × 3,116.87
  4. Step 4: Simplify right side
    7,280.39x = 34,037,810.00
  5. Step 5: Solve for x
    x = 34,037,810.00/7,280.39
  6. Step 6: Final answer
    x = 4,675.27

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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.