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Finding the Fourth Proportional to 9,639, 13,302.63 and 5,448.06

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Solution

The fourth proportional to 9,639, 13,302.63 and 5,448.06 is: 7,518.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,639 : 13,302.63 = 5,448.06 : x
  2. Step 2: Convert to fraction form
    9,639/13,302.63 = 5,448.06/x
  3. Step 3: Cross multiply
    9,639x = 13,302.63 × 5,448.06
  4. Step 4: Simplify right side
    9,639x = 72,473,526.40
  5. Step 5: Solve for x
    x = 72,473,526.40/9,639
  6. Step 6: Final answer
    x = 7,518.78

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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.