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Finding the Fourth Proportional to 5,260.80, 7,259.90 and 2,903.10

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Solution

The fourth proportional to 5,260.80, 7,259.90 and 2,903.10 is: 4,006.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,260.80 : 7,259.90 = 2,903.10 : x
  2. Step 2: Convert to fraction form
    5,260.80/7,259.90 = 2,903.10/x
  3. Step 3: Cross multiply
    5,260.80x = 7,259.90 × 2,903.10
  4. Step 4: Simplify right side
    5,260.80x = 21,076,215.69
  5. Step 5: Solve for x
    x = 21,076,215.69/5,260.80
  6. Step 6: Final answer
    x = 4,006.28

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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.