Home / 3,526.70-5,290.32-1,186.72

Finding the Fourth Proportional to 3,526.70, 5,290.32 and 1,186.72

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Solution

The fourth proportional to 3,526.70, 5,290.32 and 1,186.72 is: 1,780.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,526.70 : 5,290.32 = 1,186.72 : x
  2. Step 2: Convert to fraction form
    3,526.70/5,290.32 = 1,186.72/x
  3. Step 3: Cross multiply
    3,526.70x = 5,290.32 × 1,186.72
  4. Step 4: Simplify right side
    3,526.70x = 6,278,128.55
  5. Step 5: Solve for x
    x = 6,278,128.55/3,526.70
  6. Step 6: Final answer
    x = 1,780.17

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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.