Home / 2,970.47-4,099.12-1,644.10

Finding the Fourth Proportional to 2,970.47, 4,099.12 and 1,644.10

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Solution

The fourth proportional to 2,970.47, 4,099.12 and 1,644.10 is: 2,268.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.47 : 4,099.12 = 1,644.10 : x
  2. Step 2: Convert to fraction form
    2,970.47/4,099.12 = 1,644.10/x
  3. Step 3: Cross multiply
    2,970.47x = 4,099.12 × 1,644.10
  4. Step 4: Simplify right side
    2,970.47x = 6,739,348.83
  5. Step 5: Solve for x
    x = 6,739,348.83/2,970.47
  6. Step 6: Final answer
    x = 2,268.78

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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.