Home / 3,077.20-4,611.76-1,688.48

Finding the Fourth Proportional to 3,077.20, 4,611.76 and 1,688.48

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Solution

The fourth proportional to 3,077.20, 4,611.76 and 1,688.48 is: 2,530.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,077.20 : 4,611.76 = 1,688.48 : x
  2. Step 2: Convert to fraction form
    3,077.20/4,611.76 = 1,688.48/x
  3. Step 3: Cross multiply
    3,077.20x = 4,611.76 × 1,688.48
  4. Step 4: Simplify right side
    3,077.20x = 7,786,864.52
  5. Step 5: Solve for x
    x = 7,786,864.52/3,077.20
  6. Step 6: Final answer
    x = 2,530.50

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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.