Home / 7,876.12-10,870.62-4,521.20

Finding the Fourth Proportional to 7,876.12, 10,870.62 and 4,521.20

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Solution

The fourth proportional to 7,876.12, 10,870.62 and 4,521.20 is: 6,240.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,876.12 : 10,870.62 = 4,521.20 : x
  2. Step 2: Convert to fraction form
    7,876.12/10,870.62 = 4,521.20/x
  3. Step 3: Cross multiply
    7,876.12x = 10,870.62 × 4,521.20
  4. Step 4: Simplify right side
    7,876.12x = 49,148,247.14
  5. Step 5: Solve for x
    x = 49,148,247.14/7,876.12
  6. Step 6: Final answer
    x = 6,240.16

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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.