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Finding the Fourth Proportional to 1,763.62, 2,646.44 and 653.81

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Solution

The fourth proportional to 1,763.62, 2,646.44 and 653.81 is: 981.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,763.62 : 2,646.44 = 653.81 : x
  2. Step 2: Convert to fraction form
    1,763.62/2,646.44 = 653.81/x
  3. Step 3: Cross multiply
    1,763.62x = 2,646.44 × 653.81
  4. Step 4: Simplify right side
    1,763.62x = 1,730,277.19
  5. Step 5: Solve for x
    x = 1,730,277.19/1,763.62
  6. Step 6: Final answer
    x = 981.10

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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.