Home / 7,100.21-9,798.56-3,956.60

Finding the Fourth Proportional to 7,100.21, 9,798.56 and 3,956.60

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Solution

The fourth proportional to 7,100.21, 9,798.56 and 3,956.60 is: 5,460.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,100.21 : 9,798.56 = 3,956.60 : x
  2. Step 2: Convert to fraction form
    7,100.21/9,798.56 = 3,956.60/x
  3. Step 3: Cross multiply
    7,100.21x = 9,798.56 × 3,956.60
  4. Step 4: Simplify right side
    7,100.21x = 38,768,913.72
  5. Step 5: Solve for x
    x = 38,768,913.72/7,100.21
  6. Step 6: Final answer
    x = 5,460.25

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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.