Home / 1,977.21-2,728.76-1,506.47

Finding the Fourth Proportional to 1,977.21, 2,728.76 and 1,506.47

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Solution

The fourth proportional to 1,977.21, 2,728.76 and 1,506.47 is: 2,079.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.21 : 2,728.76 = 1,506.47 : x
  2. Step 2: Convert to fraction form
    1,977.21/2,728.76 = 1,506.47/x
  3. Step 3: Cross multiply
    1,977.21x = 2,728.76 × 1,506.47
  4. Step 4: Simplify right side
    1,977.21x = 4,110,773.90
  5. Step 5: Solve for x
    x = 4,110,773.90/1,977.21
  6. Step 6: Final answer
    x = 2,079.08

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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.