Home / 3,156.23-4,356.65-1,977.35

Finding the Fourth Proportional to 3,156.23, 4,356.65 and 1,977.35

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Solution

The fourth proportional to 3,156.23, 4,356.65 and 1,977.35 is: 2,729.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.23 : 4,356.65 = 1,977.35 : x
  2. Step 2: Convert to fraction form
    3,156.23/4,356.65 = 1,977.35/x
  3. Step 3: Cross multiply
    3,156.23x = 4,356.65 × 1,977.35
  4. Step 4: Simplify right side
    3,156.23x = 8,614,605.04
  5. Step 5: Solve for x
    x = 8,614,605.04/3,156.23
  6. Step 6: Final answer
    x = 2,729.39

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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.