Home / 3,125.37-4,312.84-1,708.78

Finding the Fourth Proportional to 3,125.37, 4,312.84 and 1,708.78

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Solution

The fourth proportional to 3,125.37, 4,312.84 and 1,708.78 is: 2,358.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.37 : 4,312.84 = 1,708.78 : x
  2. Step 2: Convert to fraction form
    3,125.37/4,312.84 = 1,708.78/x
  3. Step 3: Cross multiply
    3,125.37x = 4,312.84 × 1,708.78
  4. Step 4: Simplify right side
    3,125.37x = 7,369,671.15
  5. Step 5: Solve for x
    x = 7,369,671.15/3,125.37
  6. Step 6: Final answer
    x = 2,358.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.