Home / 5,854.89-8,780.12-1,905.11

Finding the Fourth Proportional to 5,854.89, 8,780.12 and 1,905.11

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Solution

The fourth proportional to 5,854.89, 8,780.12 and 1,905.11 is: 2,856.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,854.89 : 8,780.12 = 1,905.11 : x
  2. Step 2: Convert to fraction form
    5,854.89/8,780.12 = 1,905.11/x
  3. Step 3: Cross multiply
    5,854.89x = 8,780.12 × 1,905.11
  4. Step 4: Simplify right side
    5,854.89x = 16,727,088.20
  5. Step 5: Solve for x
    x = 16,727,088.20/5,854.89
  6. Step 6: Final answer
    x = 2,856.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.