Home / 3,125.12-4,686.80-873.59

Finding the Fourth Proportional to 3,125.12, 4,686.80 and 873.59

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Solution

The fourth proportional to 3,125.12, 4,686.80 and 873.59 is: 1,310.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.12 : 4,686.80 = 873.59 : x
  2. Step 2: Convert to fraction form
    3,125.12/4,686.80 = 873.59/x
  3. Step 3: Cross multiply
    3,125.12x = 4,686.80 × 873.59
  4. Step 4: Simplify right side
    3,125.12x = 4,094,313.81
  5. Step 5: Solve for x
    x = 4,094,313.81/3,125.12
  6. Step 6: Final answer
    x = 1,310.13

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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.