Home / 3,777.72-5,665.81-1,312.65

Finding the Fourth Proportional to 3,777.72, 5,665.81 and 1,312.65

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Solution

The fourth proportional to 3,777.72, 5,665.81 and 1,312.65 is: 1,968.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,777.72 : 5,665.81 = 1,312.65 : x
  2. Step 2: Convert to fraction form
    3,777.72/5,665.81 = 1,312.65/x
  3. Step 3: Cross multiply
    3,777.72x = 5,665.81 × 1,312.65
  4. Step 4: Simplify right side
    3,777.72x = 7,437,225.50
  5. Step 5: Solve for x
    x = 7,437,225.50/3,777.72
  6. Step 6: Final answer
    x = 1,968.71

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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.