Home / 7,880.10-10,871.49-4,521.70

Finding the Fourth Proportional to 7,880.10, 10,871.49 and 4,521.70

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Solution

The fourth proportional to 7,880.10, 10,871.49 and 4,521.70 is: 6,238.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.10 : 10,871.49 = 4,521.70 : x
  2. Step 2: Convert to fraction form
    7,880.10/10,871.49 = 4,521.70/x
  3. Step 3: Cross multiply
    7,880.10x = 10,871.49 × 4,521.70
  4. Step 4: Simplify right side
    7,880.10x = 49,157,616.33
  5. Step 5: Solve for x
    x = 49,157,616.33/7,880.10
  6. Step 6: Final answer
    x = 6,238.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.