Home / 7,021.20-10,531.84-1,827.12

Finding the Fourth Proportional to 7,021.20, 10,531.84 and 1,827.12

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Solution

The fourth proportional to 7,021.20, 10,531.84 and 1,827.12 is: 2,740.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.20 : 10,531.84 = 1,827.12 : x
  2. Step 2: Convert to fraction form
    7,021.20/10,531.84 = 1,827.12/x
  3. Step 3: Cross multiply
    7,021.20x = 10,531.84 × 1,827.12
  4. Step 4: Simplify right side
    7,021.20x = 19,242,935.50
  5. Step 5: Solve for x
    x = 19,242,935.50/7,021.20
  6. Step 6: Final answer
    x = 2,740.69

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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.