Home / 7,740.12-10,680.20-4,382.74

Finding the Fourth Proportional to 7,740.12, 10,680.20 and 4,382.74

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Solution

The fourth proportional to 7,740.12, 10,680.20 and 4,382.74 is: 6,047.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,740.12 : 10,680.20 = 4,382.74 : x
  2. Step 2: Convert to fraction form
    7,740.12/10,680.20 = 4,382.74/x
  3. Step 3: Cross multiply
    7,740.12x = 10,680.20 × 4,382.74
  4. Step 4: Simplify right side
    7,740.12x = 46,808,539.75
  5. Step 5: Solve for x
    x = 46,808,539.75/7,740.12
  6. Step 6: Final answer
    x = 6,047.52

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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.