Home / 3,090.32-4,264.28-1,970.80

Finding the Fourth Proportional to 3,090.32, 4,264.28 and 1,970.80

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Solution

The fourth proportional to 3,090.32, 4,264.28 and 1,970.80 is: 2,719.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.32 : 4,264.28 = 1,970.80 : x
  2. Step 2: Convert to fraction form
    3,090.32/4,264.28 = 1,970.80/x
  3. Step 3: Cross multiply
    3,090.32x = 4,264.28 × 1,970.80
  4. Step 4: Simplify right side
    3,090.32x = 8,404,043.02
  5. Step 5: Solve for x
    x = 8,404,043.02/3,090.32
  6. Step 6: Final answer
    x = 2,719.47

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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.