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Finding the Fourth Proportional to 6,645.80, 9,969.27 and 1,715.40

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Solution

The fourth proportional to 6,645.80, 9,969.27 and 1,715.40 is: 2,573.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645.80 : 9,969.27 = 1,715.40 : x
  2. Step 2: Convert to fraction form
    6,645.80/9,969.27 = 1,715.40/x
  3. Step 3: Cross multiply
    6,645.80x = 9,969.27 × 1,715.40
  4. Step 4: Simplify right side
    6,645.80x = 17,101,285.76
  5. Step 5: Solve for x
    x = 17,101,285.76/6,645.80
  6. Step 6: Final answer
    x = 2,573.25

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1.5x scale

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.