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Finding the Fourth Proportional to 3,527.81, 5,291.64 and 930.72

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Solution

The fourth proportional to 3,527.81, 5,291.64 and 930.72 is: 1,396.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,527.81 : 5,291.64 = 930.72 : x
  2. Step 2: Convert to fraction form
    3,527.81/5,291.64 = 930.72/x
  3. Step 3: Cross multiply
    3,527.81x = 5,291.64 × 930.72
  4. Step 4: Simplify right side
    3,527.81x = 4,925,035.18
  5. Step 5: Solve for x
    x = 4,925,035.18/3,527.81
  6. Step 6: Final answer
    x = 1,396.06

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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.