Home / 3,921.02-5,410.76-2,152.47

Finding the Fourth Proportional to 3,921.02, 5,410.76 and 2,152.47

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Solution

The fourth proportional to 3,921.02, 5,410.76 and 2,152.47 is: 2,970.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.02 : 5,410.76 = 2,152.47 : x
  2. Step 2: Convert to fraction form
    3,921.02/5,410.76 = 2,152.47/x
  3. Step 3: Cross multiply
    3,921.02x = 5,410.76 × 2,152.47
  4. Step 4: Simplify right side
    3,921.02x = 11,646,487.81
  5. Step 5: Solve for x
    x = 11,646,487.81/3,921.02
  6. Step 6: Final answer
    x = 2,970.27

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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.