Home / 5,271.30-7,907.40-1,808.55

Finding the Fourth Proportional to 5,271.30, 7,907.40 and 1,808.55

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Solution

The fourth proportional to 5,271.30, 7,907.40 and 1,808.55 is: 2,712.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,271.30 : 7,907.40 = 1,808.55 : x
  2. Step 2: Convert to fraction form
    5,271.30/7,907.40 = 1,808.55/x
  3. Step 3: Cross multiply
    5,271.30x = 7,907.40 × 1,808.55
  4. Step 4: Simplify right side
    5,271.30x = 14,300,928.27
  5. Step 5: Solve for x
    x = 14,300,928.27/5,271.30
  6. Step 6: Final answer
    x = 2,712.98

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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.