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Finding the Fourth Proportional to 7,960.77, 10,987.07 and 5,730.03

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Solution

The fourth proportional to 7,960.77, 10,987.07 and 5,730.03 is: 7,908.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,960.77 : 10,987.07 = 5,730.03 : x
  2. Step 2: Convert to fraction form
    7,960.77/10,987.07 = 5,730.03/x
  3. Step 3: Cross multiply
    7,960.77x = 10,987.07 × 5,730.03
  4. Step 4: Simplify right side
    7,960.77x = 62,956,212.06
  5. Step 5: Solve for x
    x = 62,956,212.06/7,960.77
  6. Step 6: Final answer
    x = 7,908.31

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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.