Home / 7,812.18-10,780.80-4,275.39

Finding the Fourth Proportional to 7,812.18, 10,780.80 and 4,275.39

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Solution

The fourth proportional to 7,812.18, 10,780.80 and 4,275.39 is: 5,900.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.18 : 10,780.80 = 4,275.39 : x
  2. Step 2: Convert to fraction form
    7,812.18/10,780.80 = 4,275.39/x
  3. Step 3: Cross multiply
    7,812.18x = 10,780.80 × 4,275.39
  4. Step 4: Simplify right side
    7,812.18x = 46,092,124.51
  5. Step 5: Solve for x
    x = 46,092,124.51/7,812.18
  6. Step 6: Final answer
    x = 5,900.03

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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.