Home / 2,945.10-4,417.80-753.85

Finding the Fourth Proportional to 2,945.10, 4,417.80 and 753.85

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Solution

The fourth proportional to 2,945.10, 4,417.80 and 753.85 is: 1,130.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,945.10 : 4,417.80 = 753.85 : x
  2. Step 2: Convert to fraction form
    2,945.10/4,417.80 = 753.85/x
  3. Step 3: Cross multiply
    2,945.10x = 4,417.80 × 753.85
  4. Step 4: Simplify right side
    2,945.10x = 3,330,358.53
  5. Step 5: Solve for x
    x = 3,330,358.53/2,945.10
  6. Step 6: Final answer
    x = 1,130.81

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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.