Home / 7,090.56-9,784.80-3,946.80

Finding the Fourth Proportional to 7,090.56, 9,784.80 and 3,946.80

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Solution

The fourth proportional to 7,090.56, 9,784.80 and 3,946.80 is: 5,446.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,090.56 : 9,784.80 = 3,946.80 : x
  2. Step 2: Convert to fraction form
    7,090.56/9,784.80 = 3,946.80/x
  3. Step 3: Cross multiply
    7,090.56x = 9,784.80 × 3,946.80
  4. Step 4: Simplify right side
    7,090.56x = 38,618,648.64
  5. Step 5: Solve for x
    x = 38,618,648.64/7,090.56
  6. Step 6: Final answer
    x = 5,446.49

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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.