Home / 7,815.65-10,784.55-4,792.11

Finding the Fourth Proportional to 7,815.65, 10,784.55 and 4,792.11

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Solution

The fourth proportional to 7,815.65, 10,784.55 and 4,792.11 is: 6,612.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.65 : 10,784.55 = 4,792.11 : x
  2. Step 2: Convert to fraction form
    7,815.65/10,784.55 = 4,792.11/x
  3. Step 3: Cross multiply
    7,815.65x = 10,784.55 × 4,792.11
  4. Step 4: Simplify right side
    7,815.65x = 51,680,749.90
  5. Step 5: Solve for x
    x = 51,680,749.90/7,815.65
  6. Step 6: Final answer
    x = 6,612.47

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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.