Home / 7,530.09-10,391.05-4,172.70

Finding the Fourth Proportional to 7,530.09, 10,391.05 and 4,172.70

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Solution

The fourth proportional to 7,530.09, 10,391.05 and 4,172.70 is: 5,758.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,530.09 : 10,391.05 = 4,172.70 : x
  2. Step 2: Convert to fraction form
    7,530.09/10,391.05 = 4,172.70/x
  3. Step 3: Cross multiply
    7,530.09x = 10,391.05 × 4,172.70
  4. Step 4: Simplify right side
    7,530.09x = 43,358,734.34
  5. Step 5: Solve for x
    x = 43,358,734.34/7,530.09
  6. Step 6: Final answer
    x = 5,758.06

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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.