Home / 7,130.49-9,835.92-4,145.85

Finding the Fourth Proportional to 7,130.49, 9,835.92 and 4,145.85

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Solution

The fourth proportional to 7,130.49, 9,835.92 and 4,145.85 is: 5,718.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.49 : 9,835.92 = 4,145.85 : x
  2. Step 2: Convert to fraction form
    7,130.49/9,835.92 = 4,145.85/x
  3. Step 3: Cross multiply
    7,130.49x = 9,835.92 × 4,145.85
  4. Step 4: Simplify right side
    7,130.49x = 40,778,248.93
  5. Step 5: Solve for x
    x = 40,778,248.93/7,130.49
  6. Step 6: Final answer
    x = 5,718.86

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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.