Home / 8,688.47-11,989.89-4,709.48

Finding the Fourth Proportional to 8,688.47, 11,989.89 and 4,709.48

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Solution

The fourth proportional to 8,688.47, 11,989.89 and 4,709.48 is: 6,498.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.47 : 11,989.89 = 4,709.48 : x
  2. Step 2: Convert to fraction form
    8,688.47/11,989.89 = 4,709.48/x
  3. Step 3: Cross multiply
    8,688.47x = 11,989.89 × 4,709.48
  4. Step 4: Simplify right side
    8,688.47x = 56,466,087.21
  5. Step 5: Solve for x
    x = 56,466,087.21/8,688.47
  6. Step 6: Final answer
    x = 6,498.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.