Home / 5,313.95-7,970.60-1,981.54

Finding the Fourth Proportional to 5,313.95, 7,970.60 and 1,981.54

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Solution

The fourth proportional to 5,313.95, 7,970.60 and 1,981.54 is: 2,972.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,313.95 : 7,970.60 = 1,981.54 : x
  2. Step 2: Convert to fraction form
    5,313.95/7,970.60 = 1,981.54/x
  3. Step 3: Cross multiply
    5,313.95x = 7,970.60 × 1,981.54
  4. Step 4: Simplify right side
    5,313.95x = 15,794,077.64
  5. Step 5: Solve for x
    x = 15,794,077.64/5,313.95
  6. Step 6: Final answer
    x = 2,972.19

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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.