Home / 7,812.15-10,780.83-4,275.39

Finding the Fourth Proportional to 7,812.15, 10,780.83 and 4,275.39

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Solution

The fourth proportional to 7,812.15, 10,780.83 and 4,275.39 is: 5,900.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.15 : 10,780.83 = 4,275.39 : x
  2. Step 2: Convert to fraction form
    7,812.15/10,780.83 = 4,275.39/x
  3. Step 3: Cross multiply
    7,812.15x = 10,780.83 × 4,275.39
  4. Step 4: Simplify right side
    7,812.15x = 46,092,252.77
  5. Step 5: Solve for x
    x = 46,092,252.77/7,812.15
  6. Step 6: Final answer
    x = 5,900.07

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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.