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Finding the Fourth Proportional to 2,803.17, 4,203.55 and 953.79

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Solution

The fourth proportional to 2,803.17, 4,203.55 and 953.79 is: 1,430.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,803.17 : 4,203.55 = 953.79 : x
  2. Step 2: Convert to fraction form
    2,803.17/4,203.55 = 953.79/x
  3. Step 3: Cross multiply
    2,803.17x = 4,203.55 × 953.79
  4. Step 4: Simplify right side
    2,803.17x = 4,009,307.66
  5. Step 5: Solve for x
    x = 4,009,307.66/2,803.17
  6. Step 6: Final answer
    x = 1,430.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.