Home / 3,125.80-4,688.70-1,045.72

Finding the Fourth Proportional to 3,125.80, 4,688.70 and 1,045.72

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Solution

The fourth proportional to 3,125.80, 4,688.70 and 1,045.72 is: 1,568.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.80 : 4,688.70 = 1,045.72 : x
  2. Step 2: Convert to fraction form
    3,125.80/4,688.70 = 1,045.72/x
  3. Step 3: Cross multiply
    3,125.80x = 4,688.70 × 1,045.72
  4. Step 4: Simplify right side
    3,125.80x = 4,903,067.36
  5. Step 5: Solve for x
    x = 4,903,067.36/3,125.80
  6. Step 6: Final answer
    x = 1,568.58

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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.