Home / 8,646.78-11,915.91-6,285.18

Finding the Fourth Proportional to 8,646.78, 11,915.91 and 6,285.18

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Solution

The fourth proportional to 8,646.78, 11,915.91 and 6,285.18 is: 8,661.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,646.78 : 11,915.91 = 6,285.18 : x
  2. Step 2: Convert to fraction form
    8,646.78/11,915.91 = 6,285.18/x
  3. Step 3: Cross multiply
    8,646.78x = 11,915.91 × 6,285.18
  4. Step 4: Simplify right side
    8,646.78x = 74,893,639.21
  5. Step 5: Solve for x
    x = 74,893,639.21/8,646.78
  6. Step 6: Final answer
    x = 8,661.45

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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.