Home / 5,281.51-7,928.40-3,091.81

Finding the Fourth Proportional to 5,281.51, 7,928.40 and 3,091.81

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Solution

The fourth proportional to 5,281.51, 7,928.40 and 3,091.81 is: 4,641.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.51 : 7,928.40 = 3,091.81 : x
  2. Step 2: Convert to fraction form
    5,281.51/7,928.40 = 3,091.81/x
  3. Step 3: Cross multiply
    5,281.51x = 7,928.40 × 3,091.81
  4. Step 4: Simplify right side
    5,281.51x = 24,513,106.40
  5. Step 5: Solve for x
    x = 24,513,106.40/5,281.51
  6. Step 6: Final answer
    x = 4,641.31

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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.