Home / 5,151.52-7,728.48-1,688.56

Finding the Fourth Proportional to 5,151.52, 7,728.48 and 1,688.56

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Solution

The fourth proportional to 5,151.52, 7,728.48 and 1,688.56 is: 2,533.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.52 : 7,728.48 = 1,688.56 : x
  2. Step 2: Convert to fraction form
    5,151.52/7,728.48 = 1,688.56/x
  3. Step 3: Cross multiply
    5,151.52x = 7,728.48 × 1,688.56
  4. Step 4: Simplify right side
    5,151.52x = 13,050,002.19
  5. Step 5: Solve for x
    x = 13,050,002.19/5,151.52
  6. Step 6: Final answer
    x = 2,533.23

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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.