Home / 4,287.12-6,431.18-1,513.21

Finding the Fourth Proportional to 4,287.12, 6,431.18 and 1,513.21

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Solution

The fourth proportional to 4,287.12, 6,431.18 and 1,513.21 is: 2,269.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,287.12 : 6,431.18 = 1,513.21 : x
  2. Step 2: Convert to fraction form
    4,287.12/6,431.18 = 1,513.21/x
  3. Step 3: Cross multiply
    4,287.12x = 6,431.18 × 1,513.21
  4. Step 4: Simplify right side
    4,287.12x = 9,731,725.89
  5. Step 5: Solve for x
    x = 9,731,725.89/4,287.12
  6. Step 6: Final answer
    x = 2,269.99

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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.