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Finding the Fourth Proportional to 5,393.76, 8,090.28 and 1,931.12

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Solution

The fourth proportional to 5,393.76, 8,090.28 and 1,931.12 is: 2,896.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,393.76 : 8,090.28 = 1,931.12 : x
  2. Step 2: Convert to fraction form
    5,393.76/8,090.28 = 1,931.12/x
  3. Step 3: Cross multiply
    5,393.76x = 8,090.28 × 1,931.12
  4. Step 4: Simplify right side
    5,393.76x = 15,623,301.51
  5. Step 5: Solve for x
    x = 15,623,301.51/5,393.76
  6. Step 6: Final answer
    x = 2,896.55

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Double scale
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1.5x scale

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.