Home / 7,821.02-11,731.94-1,977.68

Finding the Fourth Proportional to 7,821.02, 11,731.94 and 1,977.68

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Solution

The fourth proportional to 7,821.02, 11,731.94 and 1,977.68 is: 2,966.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.02 : 11,731.94 = 1,977.68 : x
  2. Step 2: Convert to fraction form
    7,821.02/11,731.94 = 1,977.68/x
  3. Step 3: Cross multiply
    7,821.02x = 11,731.94 × 1,977.68
  4. Step 4: Simplify right side
    7,821.02x = 23,202,023.10
  5. Step 5: Solve for x
    x = 23,202,023.10/7,821.02
  6. Step 6: Final answer
    x = 2,966.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.