Home / 5,315.55-7,322.81-3,719.22

Finding the Fourth Proportional to 5,315.55, 7,322.81 and 3,719.22

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Solution

The fourth proportional to 5,315.55, 7,322.81 and 3,719.22 is: 5,123.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.55 : 7,322.81 = 3,719.22 : x
  2. Step 2: Convert to fraction form
    5,315.55/7,322.81 = 3,719.22/x
  3. Step 3: Cross multiply
    5,315.55x = 7,322.81 × 3,719.22
  4. Step 4: Simplify right side
    5,315.55x = 27,235,122.81
  5. Step 5: Solve for x
    x = 27,235,122.81/5,315.55
  6. Step 6: Final answer
    x = 5,123.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.