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Finding the Fourth Proportional to 7,887.51, 10,886.63 and 4,905.63

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Solution

The fourth proportional to 7,887.51, 10,886.63 and 4,905.63 is: 6,770.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.51 : 10,886.63 = 4,905.63 : x
  2. Step 2: Convert to fraction form
    7,887.51/10,886.63 = 4,905.63/x
  3. Step 3: Cross multiply
    7,887.51x = 10,886.63 × 4,905.63
  4. Step 4: Simplify right side
    7,887.51x = 53,405,754.20
  5. Step 5: Solve for x
    x = 53,405,754.20/7,887.51
  6. Step 6: Final answer
    x = 6,770.93

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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.