Home / 8,688.31-13,031.43-2,448.79

Finding the Fourth Proportional to 8,688.31, 13,031.43 and 2,448.79

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Solution

The fourth proportional to 8,688.31, 13,031.43 and 2,448.79 is: 3,672.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.31 : 13,031.43 = 2,448.79 : x
  2. Step 2: Convert to fraction form
    8,688.31/13,031.43 = 2,448.79/x
  3. Step 3: Cross multiply
    8,688.31x = 13,031.43 × 2,448.79
  4. Step 4: Simplify right side
    8,688.31x = 31,911,235.47
  5. Step 5: Solve for x
    x = 31,911,235.47/8,688.31
  6. Step 6: Final answer
    x = 3,672.89

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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.