Home / 3,319.02-4,579.74-1,921.50

Finding the Fourth Proportional to 3,319.02, 4,579.74 and 1,921.50

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Solution

The fourth proportional to 3,319.02, 4,579.74 and 1,921.50 is: 2,651.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.02 : 4,579.74 = 1,921.50 : x
  2. Step 2: Convert to fraction form
    3,319.02/4,579.74 = 1,921.50/x
  3. Step 3: Cross multiply
    3,319.02x = 4,579.74 × 1,921.50
  4. Step 4: Simplify right side
    3,319.02x = 8,799,970.41
  5. Step 5: Solve for x
    x = 8,799,970.41/3,319.02
  6. Step 6: Final answer
    x = 2,651.38

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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.