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Finding the Fourth Proportional to 9,609, 13,260.45 and 5,417.28

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Solution

The fourth proportional to 9,609, 13,260.45 and 5,417.28 is: 7,475.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,609 : 13,260.45 = 5,417.28 : x
  2. Step 2: Convert to fraction form
    9,609/13,260.45 = 5,417.28/x
  3. Step 3: Cross multiply
    9,609x = 13,260.45 × 5,417.28
  4. Step 4: Simplify right side
    9,609x = 71,835,570.58
  5. Step 5: Solve for x
    x = 71,835,570.58/9,609
  6. Step 6: Final answer
    x = 7,475.86

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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.