Home / 5,148.44-7,723.74-1,688.12

Finding the Fourth Proportional to 5,148.44, 7,723.74 and 1,688.12

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Solution

The fourth proportional to 5,148.44, 7,723.74 and 1,688.12 is: 2,532.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.44 : 7,723.74 = 1,688.12 : x
  2. Step 2: Convert to fraction form
    5,148.44/7,723.74 = 1,688.12/x
  3. Step 3: Cross multiply
    5,148.44x = 7,723.74 × 1,688.12
  4. Step 4: Simplify right side
    5,148.44x = 13,038,599.97
  5. Step 5: Solve for x
    x = 13,038,599.97/5,148.44
  6. Step 6: Final answer
    x = 2,532.53

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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.