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Finding the Fourth Proportional to 5,263.61, 7,263.71 and 2,905.70

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Solution

The fourth proportional to 5,263.61, 7,263.71 and 2,905.70 is: 4,009.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,263.61 : 7,263.71 = 2,905.70 : x
  2. Step 2: Convert to fraction form
    5,263.61/7,263.71 = 2,905.70/x
  3. Step 3: Cross multiply
    5,263.61x = 7,263.71 × 2,905.70
  4. Step 4: Simplify right side
    5,263.61x = 21,106,133.09
  5. Step 5: Solve for x
    x = 21,106,133.09/5,263.61
  6. Step 6: Final answer
    x = 4,009.82

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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.