Home / 2,107.17-3,160.35-645.93

Finding the Fourth Proportional to 2,107.17, 3,160.35 and 645.93

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Solution

The fourth proportional to 2,107.17, 3,160.35 and 645.93 is: 968.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.17 : 3,160.35 = 645.93 : x
  2. Step 2: Convert to fraction form
    2,107.17/3,160.35 = 645.93/x
  3. Step 3: Cross multiply
    2,107.17x = 3,160.35 × 645.93
  4. Step 4: Simplify right side
    2,107.17x = 2,041,364.88
  5. Step 5: Solve for x
    x = 2,041,364.88/2,107.17
  6. Step 6: Final answer
    x = 968.77

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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.