Home / 7,140.50-9,857.31-4,754.45

Finding the Fourth Proportional to 7,140.50, 9,857.31 and 4,754.45

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Solution

The fourth proportional to 7,140.50, 9,857.31 and 4,754.45 is: 6,563.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.50 : 9,857.31 = 4,754.45 : x
  2. Step 2: Convert to fraction form
    7,140.50/9,857.31 = 4,754.45/x
  3. Step 3: Cross multiply
    7,140.50x = 9,857.31 × 4,754.45
  4. Step 4: Simplify right side
    7,140.50x = 46,866,087.53
  5. Step 5: Solve for x
    x = 46,866,087.53/7,140.50
  6. Step 6: Final answer
    x = 6,563.42

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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.