Home / 9,405.63-12,979.40-5,626.58

Finding the Fourth Proportional to 9,405.63, 12,979.40 and 5,626.58

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Solution

The fourth proportional to 9,405.63, 12,979.40 and 5,626.58 is: 7,764.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,405.63 : 12,979.40 = 5,626.58 : x
  2. Step 2: Convert to fraction form
    9,405.63/12,979.40 = 5,626.58/x
  3. Step 3: Cross multiply
    9,405.63x = 12,979.40 × 5,626.58
  4. Step 4: Simplify right side
    9,405.63x = 73,029,539.42
  5. Step 5: Solve for x
    x = 73,029,539.42/9,405.63
  6. Step 6: Final answer
    x = 7,764.45

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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.