Home / 3,911.02-5,866.53-1,315.78

Finding the Fourth Proportional to 3,911.02, 5,866.53 and 1,315.78

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Solution

The fourth proportional to 3,911.02, 5,866.53 and 1,315.78 is: 1,973.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.02 : 5,866.53 = 1,315.78 : x
  2. Step 2: Convert to fraction form
    3,911.02/5,866.53 = 1,315.78/x
  3. Step 3: Cross multiply
    3,911.02x = 5,866.53 × 1,315.78
  4. Step 4: Simplify right side
    3,911.02x = 7,719,048.18
  5. Step 5: Solve for x
    x = 7,719,048.18/3,911.02
  6. Step 6: Final answer
    x = 1,973.67

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Similar ratio
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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.