Home / 4,311.60-6,467.40-1,390.13

Finding the Fourth Proportional to 4,311.60, 6,467.40 and 1,390.13

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Solution

The fourth proportional to 4,311.60, 6,467.40 and 1,390.13 is: 2,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,311.60 : 6,467.40 = 1,390.13 : x
  2. Step 2: Convert to fraction form
    4,311.60/6,467.40 = 1,390.13/x
  3. Step 3: Cross multiply
    4,311.60x = 6,467.40 × 1,390.13
  4. Step 4: Simplify right side
    4,311.60x = 8,990,526.76
  5. Step 5: Solve for x
    x = 8,990,526.76/4,311.60
  6. Step 6: Final answer
    x = 2,085.20

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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.