Home / 2,977.16-4,107.12-2,089.40

Finding the Fourth Proportional to 2,977.16, 4,107.12 and 2,089.40

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Solution

The fourth proportional to 2,977.16, 4,107.12 and 2,089.40 is: 2,882.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,977.16 : 4,107.12 = 2,089.40 : x
  2. Step 2: Convert to fraction form
    2,977.16/4,107.12 = 2,089.40/x
  3. Step 3: Cross multiply
    2,977.16x = 4,107.12 × 2,089.40
  4. Step 4: Simplify right side
    2,977.16x = 8,581,416.53
  5. Step 5: Solve for x
    x = 8,581,416.53/2,977.16
  6. Step 6: Final answer
    x = 2,882.42

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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.