Home / 9,380.78-12,944.95-5,130.99

Finding the Fourth Proportional to 9,380.78, 12,944.95 and 5,130.99

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Solution

The fourth proportional to 9,380.78, 12,944.95 and 5,130.99 is: 7,080.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,380.78 : 12,944.95 = 5,130.99 : x
  2. Step 2: Convert to fraction form
    9,380.78/12,944.95 = 5,130.99/x
  3. Step 3: Cross multiply
    9,380.78x = 12,944.95 × 5,130.99
  4. Step 4: Simplify right side
    9,380.78x = 66,420,409.00
  5. Step 5: Solve for x
    x = 66,420,409.00/9,380.78
  6. Step 6: Final answer
    x = 7,080.48

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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.