Home / 7,878.12-11,824.47-3,985.26

Finding the Fourth Proportional to 7,878.12, 11,824.47 and 3,985.26

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Solution

The fourth proportional to 7,878.12, 11,824.47 and 3,985.26 is: 5,981.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.12 : 11,824.47 = 3,985.26 : x
  2. Step 2: Convert to fraction form
    7,878.12/11,824.47 = 3,985.26/x
  3. Step 3: Cross multiply
    7,878.12x = 11,824.47 × 3,985.26
  4. Step 4: Simplify right side
    7,878.12x = 47,123,587.31
  5. Step 5: Solve for x
    x = 47,123,587.31/7,878.12
  6. Step 6: Final answer
    x = 5,981.58

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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.