Home / 7,114.35-9,818.36-3,928.26

Finding the Fourth Proportional to 7,114.35, 9,818.36 and 3,928.26

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Solution

The fourth proportional to 7,114.35, 9,818.36 and 3,928.26 is: 5,421.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,114.35 : 9,818.36 = 3,928.26 : x
  2. Step 2: Convert to fraction form
    7,114.35/9,818.36 = 3,928.26/x
  3. Step 3: Cross multiply
    7,114.35x = 9,818.36 × 3,928.26
  4. Step 4: Simplify right side
    7,114.35x = 38,569,102.76
  5. Step 5: Solve for x
    x = 38,569,102.76/7,114.35
  6. Step 6: Final answer
    x = 5,421.31

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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.