Home / 7,140.40-9,849.18-4,621.48

Finding the Fourth Proportional to 7,140.40, 9,849.18 and 4,621.48

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Solution

The fourth proportional to 7,140.40, 9,849.18 and 4,621.48 is: 6,374.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.40 : 9,849.18 = 4,621.48 : x
  2. Step 2: Convert to fraction form
    7,140.40/9,849.18 = 4,621.48/x
  3. Step 3: Cross multiply
    7,140.40x = 9,849.18 × 4,621.48
  4. Step 4: Simplify right side
    7,140.40x = 45,517,788.39
  5. Step 5: Solve for x
    x = 45,517,788.39/7,140.40
  6. Step 6: Final answer
    x = 6,374.68

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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.