Home / 7,868.85-10,857.88-4,511.80

Finding the Fourth Proportional to 7,868.85, 10,857.88 and 4,511.80

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Solution

The fourth proportional to 7,868.85, 10,857.88 and 4,511.80 is: 6,225.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,868.85 : 10,857.88 = 4,511.80 : x
  2. Step 2: Convert to fraction form
    7,868.85/10,857.88 = 4,511.80/x
  3. Step 3: Cross multiply
    7,868.85x = 10,857.88 × 4,511.80
  4. Step 4: Simplify right side
    7,868.85x = 48,988,602.20
  5. Step 5: Solve for x
    x = 48,988,602.20/7,868.85
  6. Step 6: Final answer
    x = 6,225.64

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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.