Home / 5,213.69-7,820.57-1,318.10

Finding the Fourth Proportional to 5,213.69, 7,820.57 and 1,318.10

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Solution

The fourth proportional to 5,213.69, 7,820.57 and 1,318.10 is: 1,977.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,213.69 : 7,820.57 = 1,318.10 : x
  2. Step 2: Convert to fraction form
    5,213.69/7,820.57 = 1,318.10/x
  3. Step 3: Cross multiply
    5,213.69x = 7,820.57 × 1,318.10
  4. Step 4: Simplify right side
    5,213.69x = 10,308,306.28
  5. Step 5: Solve for x
    x = 10,308,306.28/5,213.69
  6. Step 6: Final answer
    x = 1,977.16

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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.