Home / 8,688.23-11,989.71-4,709.30

Finding the Fourth Proportional to 8,688.23, 11,989.71 and 4,709.30

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Solution

The fourth proportional to 8,688.23, 11,989.71 and 4,709.30 is: 6,498.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.23 : 11,989.71 = 4,709.30 : x
  2. Step 2: Convert to fraction form
    8,688.23/11,989.71 = 4,709.30/x
  3. Step 3: Cross multiply
    8,688.23x = 11,989.71 × 4,709.30
  4. Step 4: Simplify right side
    8,688.23x = 56,463,141.30
  5. Step 5: Solve for x
    x = 56,463,141.30/8,688.23
  6. Step 6: Final answer
    x = 6,498.81

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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.