Home / 8,509.17-12,749.09-6,638.75

Finding the Fourth Proportional to 8,509.17, 12,749.09 and 6,638.75

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Solution

The fourth proportional to 8,509.17, 12,749.09 and 6,638.75 is: 9,946.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,509.17 : 12,749.09 = 6,638.75 : x
  2. Step 2: Convert to fraction form
    8,509.17/12,749.09 = 6,638.75/x
  3. Step 3: Cross multiply
    8,509.17x = 12,749.09 × 6,638.75
  4. Step 4: Simplify right side
    8,509.17x = 84,638,069.71
  5. Step 5: Solve for x
    x = 84,638,069.71/8,509.17
  6. Step 6: Final answer
    x = 9,946.69

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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.