Home / 2,945.20-4,065.24-1,897.60

Finding the Fourth Proportional to 2,945.20, 4,065.24 and 1,897.60

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Solution

The fourth proportional to 2,945.20, 4,065.24 and 1,897.60 is: 2,619.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,945.20 : 4,065.24 = 1,897.60 : x
  2. Step 2: Convert to fraction form
    2,945.20/4,065.24 = 1,897.60/x
  3. Step 3: Cross multiply
    2,945.20x = 4,065.24 × 1,897.60
  4. Step 4: Simplify right side
    2,945.20x = 7,714,199.42
  5. Step 5: Solve for x
    x = 7,714,199.42/2,945.20
  6. Step 6: Final answer
    x = 2,619.24

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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.