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Finding the Fourth Proportional to 6,866.11, 10,210.84 and 6,647.41

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Solution

The fourth proportional to 6,866.11, 10,210.84 and 6,647.41 is: 9,885.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,866.11 : 10,210.84 = 6,647.41 : x
  2. Step 2: Convert to fraction form
    6,866.11/10,210.84 = 6,647.41/x
  3. Step 3: Cross multiply
    6,866.11x = 10,210.84 × 6,647.41
  4. Step 4: Simplify right side
    6,866.11x = 67,875,639.92
  5. Step 5: Solve for x
    x = 67,875,639.92/6,866.11
  6. Step 6: Final answer
    x = 9,885.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.