Home / 3,140.26-4,710.14-918.92

Finding the Fourth Proportional to 3,140.26, 4,710.14 and 918.92

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Solution

The fourth proportional to 3,140.26, 4,710.14 and 918.92 is: 1,378.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.26 : 4,710.14 = 918.92 : x
  2. Step 2: Convert to fraction form
    3,140.26/4,710.14 = 918.92/x
  3. Step 3: Cross multiply
    3,140.26x = 4,710.14 × 918.92
  4. Step 4: Simplify right side
    3,140.26x = 4,328,237.94
  5. Step 5: Solve for x
    x = 4,328,237.94/3,140.26
  6. Step 6: Final answer
    x = 1,378.30

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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.