Home / 8,436.51-11,631.47-5,779.17

Finding the Fourth Proportional to 8,436.51, 11,631.47 and 5,779.17

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Solution

The fourth proportional to 8,436.51, 11,631.47 and 5,779.17 is: 7,967.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,436.51 : 11,631.47 = 5,779.17 : x
  2. Step 2: Convert to fraction form
    8,436.51/11,631.47 = 5,779.17/x
  3. Step 3: Cross multiply
    8,436.51x = 11,631.47 × 5,779.17
  4. Step 4: Simplify right side
    8,436.51x = 67,220,213.58
  5. Step 5: Solve for x
    x = 67,220,213.58/8,436.51
  6. Step 6: Final answer
    x = 7,967.78

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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.