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Finding the Fourth Proportional to 6,610.74, 9,915.15 and 1,929.51

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Solution

The fourth proportional to 6,610.74, 9,915.15 and 1,929.51 is: 2,893.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,610.74 : 9,915.15 = 1,929.51 : x
  2. Step 2: Convert to fraction form
    6,610.74/9,915.15 = 1,929.51/x
  3. Step 3: Cross multiply
    6,610.74x = 9,915.15 × 1,929.51
  4. Step 4: Simplify right side
    6,610.74x = 19,131,381.08
  5. Step 5: Solve for x
    x = 19,131,381.08/6,610.74
  6. Step 6: Final answer
    x = 2,893.98

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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.