Home / 6,823.14-9,415.17-3,840

Finding the Fourth Proportional to 6,823.14, 9,415.17 and 3,840

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Solution

The fourth proportional to 6,823.14, 9,415.17 and 3,840 is: 5,298.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,823.14 : 9,415.17 = 3,840 : x
  2. Step 2: Convert to fraction form
    6,823.14/9,415.17 = 3,840/x
  3. Step 3: Cross multiply
    6,823.14x = 9,415.17 × 3,840
  4. Step 4: Simplify right side
    6,823.14x = 36,154,252.80
  5. Step 5: Solve for x
    x = 36,154,252.80/6,823.14
  6. Step 6: Final answer
    x = 5,298.77

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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.