Home / 7,815.14-10,784.91-4,278.58

Finding the Fourth Proportional to 7,815.14, 10,784.91 and 4,278.58

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Solution

The fourth proportional to 7,815.14, 10,784.91 and 4,278.58 is: 5,904.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.14 : 10,784.91 = 4,278.58 : x
  2. Step 2: Convert to fraction form
    7,815.14/10,784.91 = 4,278.58/x
  3. Step 3: Cross multiply
    7,815.14x = 10,784.91 × 4,278.58
  4. Step 4: Simplify right side
    7,815.14x = 46,144,024.91
  5. Step 5: Solve for x
    x = 46,144,024.91/7,815.14
  6. Step 6: Final answer
    x = 5,904.44

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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.