Home / 3,139.65-4,689.81-3,125.07

Finding the Fourth Proportional to 3,139.65, 4,689.81 and 3,125.07

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Solution

The fourth proportional to 3,139.65, 4,689.81 and 3,125.07 is: 4,668.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.65 : 4,689.81 = 3,125.07 : x
  2. Step 2: Convert to fraction form
    3,139.65/4,689.81 = 3,125.07/x
  3. Step 3: Cross multiply
    3,139.65x = 4,689.81 × 3,125.07
  4. Step 4: Simplify right side
    3,139.65x = 14,655,984.54
  5. Step 5: Solve for x
    x = 14,655,984.54/3,139.65
  6. Step 6: Final answer
    x = 4,668.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.