Home / 7,038.45-9,713.07-3,851.78

Finding the Fourth Proportional to 7,038.45, 9,713.07 and 3,851.78

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Solution

The fourth proportional to 7,038.45, 9,713.07 and 3,851.78 is: 5,315.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,038.45 : 9,713.07 = 3,851.78 : x
  2. Step 2: Convert to fraction form
    7,038.45/9,713.07 = 3,851.78/x
  3. Step 3: Cross multiply
    7,038.45x = 9,713.07 × 3,851.78
  4. Step 4: Simplify right side
    7,038.45x = 37,412,560.20
  5. Step 5: Solve for x
    x = 37,412,560.20/7,038.45
  6. Step 6: Final answer
    x = 5,315.45

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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.