Home / 3,089.78-4,264.33-1,970.36

Finding the Fourth Proportional to 3,089.78, 4,264.33 and 1,970.36

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Solution

The fourth proportional to 3,089.78, 4,264.33 and 1,970.36 is: 2,719.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,089.78 : 4,264.33 = 1,970.36 : x
  2. Step 2: Convert to fraction form
    3,089.78/4,264.33 = 1,970.36/x
  3. Step 3: Cross multiply
    3,089.78x = 4,264.33 × 1,970.36
  4. Step 4: Simplify right side
    3,089.78x = 8,402,265.26
  5. Step 5: Solve for x
    x = 8,402,265.26/3,089.78
  6. Step 6: Final answer
    x = 2,719.37

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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.