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Finding the Fourth Proportional to 7,155.05, 9,886.79 and 5,594.99

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Solution

The fourth proportional to 7,155.05, 9,886.79 and 5,594.99 is: 7,731.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,155.05 : 9,886.79 = 5,594.99 : x
  2. Step 2: Convert to fraction form
    7,155.05/9,886.79 = 5,594.99/x
  3. Step 3: Cross multiply
    7,155.05x = 9,886.79 × 5,594.99
  4. Step 4: Simplify right side
    7,155.05x = 55,316,455.74
  5. Step 5: Solve for x
    x = 55,316,455.74/7,155.05
  6. Step 6: Final answer
    x = 7,731.11

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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.