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Finding the Fourth Proportional to 2,347.29, 3,520.40 and 703.63

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Solution

The fourth proportional to 2,347.29, 3,520.40 and 703.63 is: 1,055.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347.29 : 3,520.40 = 703.63 : x
  2. Step 2: Convert to fraction form
    2,347.29/3,520.40 = 703.63/x
  3. Step 3: Cross multiply
    2,347.29x = 3,520.40 × 703.63
  4. Step 4: Simplify right side
    2,347.29x = 2,477,041.45
  5. Step 5: Solve for x
    x = 2,477,041.45/2,347.29
  6. Step 6: Final answer
    x = 1,055.28

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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.