Home / 8,307.48-11,475.51-6,640.56

Finding the Fourth Proportional to 8,307.48, 11,475.51 and 6,640.56

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Solution

The fourth proportional to 8,307.48, 11,475.51 and 6,640.56 is: 9,172.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,307.48 : 11,475.51 = 6,640.56 : x
  2. Step 2: Convert to fraction form
    8,307.48/11,475.51 = 6,640.56/x
  3. Step 3: Cross multiply
    8,307.48x = 11,475.51 × 6,640.56
  4. Step 4: Simplify right side
    8,307.48x = 76,203,812.69
  5. Step 5: Solve for x
    x = 76,203,812.69/8,307.48
  6. Step 6: Final answer
    x = 9,172.92

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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.