Home / 3,125.10-4,312.65-1,708.77

Finding the Fourth Proportional to 3,125.10, 4,312.65 and 1,708.77

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Solution

The fourth proportional to 3,125.10, 4,312.65 and 1,708.77 is: 2,358.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.10 : 4,312.65 = 1,708.77 : x
  2. Step 2: Convert to fraction form
    3,125.10/4,312.65 = 1,708.77/x
  3. Step 3: Cross multiply
    3,125.10x = 4,312.65 × 1,708.77
  4. Step 4: Simplify right side
    3,125.10x = 7,369,326.94
  5. Step 5: Solve for x
    x = 7,369,326.94/3,125.10
  6. Step 6: Final answer
    x = 2,358.11

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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.