Home / 3,128.47-4,693.45-1,048.48

Finding the Fourth Proportional to 3,128.47, 4,693.45 and 1,048.48

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Solution

The fourth proportional to 3,128.47, 4,693.45 and 1,048.48 is: 1,572.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.47 : 4,693.45 = 1,048.48 : x
  2. Step 2: Convert to fraction form
    3,128.47/4,693.45 = 1,048.48/x
  3. Step 3: Cross multiply
    3,128.47x = 4,693.45 × 1,048.48
  4. Step 4: Simplify right side
    3,128.47x = 4,920,974.10
  5. Step 5: Solve for x
    x = 4,920,974.10/3,128.47
  6. Step 6: Final answer
    x = 1,572.97

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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.