Home / 3,128.48-4,315.63-1,934.13

Finding the Fourth Proportional to 3,128.48, 4,315.63 and 1,934.13

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Solution

The fourth proportional to 3,128.48, 4,315.63 and 1,934.13 is: 2,668.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.48 : 4,315.63 = 1,934.13 : x
  2. Step 2: Convert to fraction form
    3,128.48/4,315.63 = 1,934.13/x
  3. Step 3: Cross multiply
    3,128.48x = 4,315.63 × 1,934.13
  4. Step 4: Simplify right side
    3,128.48x = 8,346,979.78
  5. Step 5: Solve for x
    x = 8,346,979.78/3,128.48
  6. Step 6: Final answer
    x = 2,668.07

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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.