Home / 2,938.55-4,055.13-1,679.67

Finding the Fourth Proportional to 2,938.55, 4,055.13 and 1,679.67

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Solution

The fourth proportional to 2,938.55, 4,055.13 and 1,679.67 is: 2,317.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.55 : 4,055.13 = 1,679.67 : x
  2. Step 2: Convert to fraction form
    2,938.55/4,055.13 = 1,679.67/x
  3. Step 3: Cross multiply
    2,938.55x = 4,055.13 × 1,679.67
  4. Step 4: Simplify right side
    2,938.55x = 6,811,280.21
  5. Step 5: Solve for x
    x = 6,811,280.21/2,938.55
  6. Step 6: Final answer
    x = 2,317.91

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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.