Home / 4,311.09-6,465.96-1,390.10

Finding the Fourth Proportional to 4,311.09, 6,465.96 and 1,390.10

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Solution

The fourth proportional to 4,311.09, 6,465.96 and 1,390.10 is: 2,084.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,311.09 : 6,465.96 = 1,390.10 : x
  2. Step 2: Convert to fraction form
    4,311.09/6,465.96 = 1,390.10/x
  3. Step 3: Cross multiply
    4,311.09x = 6,465.96 × 1,390.10
  4. Step 4: Simplify right side
    4,311.09x = 8,988,298.67
  5. Step 5: Solve for x
    x = 8,988,298.67/4,311.09
  6. Step 6: Final answer
    x = 2,084.92

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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.