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Finding the Fourth Proportional to 7,159.76, 9,887.97 and 4,927.40

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Solution

The fourth proportional to 7,159.76, 9,887.97 and 4,927.40 is: 6,804.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,159.76 : 9,887.97 = 4,927.40 : x
  2. Step 2: Convert to fraction form
    7,159.76/9,887.97 = 4,927.40/x
  3. Step 3: Cross multiply
    7,159.76x = 9,887.97 × 4,927.40
  4. Step 4: Simplify right side
    7,159.76x = 48,721,933.94
  5. Step 5: Solve for x
    x = 48,721,933.94/7,159.76
  6. Step 6: Final answer
    x = 6,804.97

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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.