Home / 3,130.78-4,320.42-1,733.50

Finding the Fourth Proportional to 3,130.78, 4,320.42 and 1,733.50

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Solution

The fourth proportional to 3,130.78, 4,320.42 and 1,733.50 is: 2,392.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.78 : 4,320.42 = 1,733.50 : x
  2. Step 2: Convert to fraction form
    3,130.78/4,320.42 = 1,733.50/x
  3. Step 3: Cross multiply
    3,130.78x = 4,320.42 × 1,733.50
  4. Step 4: Simplify right side
    3,130.78x = 7,489,448.07
  5. Step 5: Solve for x
    x = 7,489,448.07/3,130.78
  6. Step 6: Final answer
    x = 2,392.20

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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.