Home / 3,123.12-4,686.24-1,893.60

Finding the Fourth Proportional to 3,123.12, 4,686.24 and 1,893.60

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Solution

The fourth proportional to 3,123.12, 4,686.24 and 1,893.60 is: 2,841.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.12 : 4,686.24 = 1,893.60 : x
  2. Step 2: Convert to fraction form
    3,123.12/4,686.24 = 1,893.60/x
  3. Step 3: Cross multiply
    3,123.12x = 4,686.24 × 1,893.60
  4. Step 4: Simplify right side
    3,123.12x = 8,873,864.06
  5. Step 5: Solve for x
    x = 8,873,864.06/3,123.12
  6. Step 6: Final answer
    x = 2,841.35

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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.