Home / 4,311.29-6,465.32-1,388.81

Finding the Fourth Proportional to 4,311.29, 6,465.32 and 1,388.81

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Solution

The fourth proportional to 4,311.29, 6,465.32 and 1,388.81 is: 2,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,311.29 : 6,465.32 = 1,388.81 : x
  2. Step 2: Convert to fraction form
    4,311.29/6,465.32 = 1,388.81/x
  3. Step 3: Cross multiply
    4,311.29x = 6,465.32 × 1,388.81
  4. Step 4: Simplify right side
    4,311.29x = 8,979,115.50
  5. Step 5: Solve for x
    x = 8,979,115.50/4,311.29
  6. Step 6: Final answer
    x = 2,082.70

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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.