Home / 5,270.30-7,905.90-1,807.55

Finding the Fourth Proportional to 5,270.30, 7,905.90 and 1,807.55

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Solution

The fourth proportional to 5,270.30, 7,905.90 and 1,807.55 is: 2,711.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,270.30 : 7,905.90 = 1,807.55 : x
  2. Step 2: Convert to fraction form
    5,270.30/7,905.90 = 1,807.55/x
  3. Step 3: Cross multiply
    5,270.30x = 7,905.90 × 1,807.55
  4. Step 4: Simplify right side
    5,270.30x = 14,290,309.55
  5. Step 5: Solve for x
    x = 14,290,309.55/5,270.30
  6. Step 6: Final answer
    x = 2,711.48

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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.