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Finding the Fourth Proportional to 5,271.44, 7,911.02 and 3,888.51

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Solution

The fourth proportional to 5,271.44, 7,911.02 and 3,888.51 is: 5,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,271.44 : 7,911.02 = 3,888.51 : x
  2. Step 2: Convert to fraction form
    5,271.44/7,911.02 = 3,888.51/x
  3. Step 3: Cross multiply
    5,271.44x = 7,911.02 × 3,888.51
  4. Step 4: Simplify right side
    5,271.44x = 30,762,038.56
  5. Step 5: Solve for x
    x = 30,762,038.56/5,271.44
  6. Step 6: Final answer
    x = 5,835.60

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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.