Home / 7,815.19-10,784.91-4,278.46

Finding the Fourth Proportional to 7,815.19, 10,784.91 and 4,278.46

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Solution

The fourth proportional to 7,815.19, 10,784.91 and 4,278.46 is: 5,904.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.19 : 10,784.91 = 4,278.46 : x
  2. Step 2: Convert to fraction form
    7,815.19/10,784.91 = 4,278.46/x
  3. Step 3: Cross multiply
    7,815.19x = 10,784.91 × 4,278.46
  4. Step 4: Simplify right side
    7,815.19x = 46,142,806.04
  5. Step 5: Solve for x
    x = 46,142,806.04/7,815.19
  6. Step 6: Final answer
    x = 5,904.25

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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.