Home / 5,209.38-7,813.35-1,313.55

Finding the Fourth Proportional to 5,209.38, 7,813.35 and 1,313.55

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Solution

The fourth proportional to 5,209.38, 7,813.35 and 1,313.55 is: 1,970.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.38 : 7,813.35 = 1,313.55 : x
  2. Step 2: Convert to fraction form
    5,209.38/7,813.35 = 1,313.55/x
  3. Step 3: Cross multiply
    5,209.38x = 7,813.35 × 1,313.55
  4. Step 4: Simplify right side
    5,209.38x = 10,263,225.89
  5. Step 5: Solve for x
    x = 10,263,225.89/5,209.38
  6. Step 6: Final answer
    x = 1,970.14

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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.