Home / 7,812.11-10,780.63-4,275.28

Finding the Fourth Proportional to 7,812.11, 10,780.63 and 4,275.28

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Solution

The fourth proportional to 7,812.11, 10,780.63 and 4,275.28 is: 5,899.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.11 : 10,780.63 = 4,275.28 : x
  2. Step 2: Convert to fraction form
    7,812.11/10,780.63 = 4,275.28/x
  3. Step 3: Cross multiply
    7,812.11x = 10,780.63 × 4,275.28
  4. Step 4: Simplify right side
    7,812.11x = 46,090,214.61
  5. Step 5: Solve for x
    x = 46,090,214.61/7,812.11
  6. Step 6: Final answer
    x = 5,899.84

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.