Home / 7,868.91-10,855.29-4,888.20

Finding the Fourth Proportional to 7,868.91, 10,855.29 and 4,888.20

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Solution

The fourth proportional to 7,868.91, 10,855.29 and 4,888.20 is: 6,743.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,868.91 : 10,855.29 = 4,888.20 : x
  2. Step 2: Convert to fraction form
    7,868.91/10,855.29 = 4,888.20/x
  3. Step 3: Cross multiply
    7,868.91x = 10,855.29 × 4,888.20
  4. Step 4: Simplify right side
    7,868.91x = 53,062,828.58
  5. Step 5: Solve for x
    x = 53,062,828.58/7,868.91
  6. Step 6: Final answer
    x = 6,743.35

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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.