Home / 10,853.79-16,280.40-3,458.70

Finding the Fourth Proportional to 10,853.79, 16,280.40 and 3,458.70

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Solution

The fourth proportional to 10,853.79, 16,280.40 and 3,458.70 is: 5,187.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,853.79 : 16,280.40 = 3,458.70 : x
  2. Step 2: Convert to fraction form
    10,853.79/16,280.40 = 3,458.70/x
  3. Step 3: Cross multiply
    10,853.79x = 16,280.40 × 3,458.70
  4. Step 4: Simplify right side
    10,853.79x = 56,309,019.48
  5. Step 5: Solve for x
    x = 56,309,019.48/10,853.79
  6. Step 6: Final answer
    x = 5,187.96

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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.