Home / 7,175.24-9,900.78-4,030.80

Finding the Fourth Proportional to 7,175.24, 9,900.78 and 4,030.80

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Solution

The fourth proportional to 7,175.24, 9,900.78 and 4,030.80 is: 5,561.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,175.24 : 9,900.78 = 4,030.80 : x
  2. Step 2: Convert to fraction form
    7,175.24/9,900.78 = 4,030.80/x
  3. Step 3: Cross multiply
    7,175.24x = 9,900.78 × 4,030.80
  4. Step 4: Simplify right side
    7,175.24x = 39,908,064.02
  5. Step 5: Solve for x
    x = 39,908,064.02/7,175.24
  6. Step 6: Final answer
    x = 5,561.91

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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.