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Finding the Fourth Proportional to 1,784.70, 2,463.04 and 988.08

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Solution

The fourth proportional to 1,784.70, 2,463.04 and 988.08 is: 1,363.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,784.70 : 2,463.04 = 988.08 : x
  2. Step 2: Convert to fraction form
    1,784.70/2,463.04 = 988.08/x
  3. Step 3: Cross multiply
    1,784.70x = 2,463.04 × 988.08
  4. Step 4: Simplify right side
    1,784.70x = 2,433,680.56
  5. Step 5: Solve for x
    x = 2,433,680.56/1,784.70
  6. Step 6: Final answer
    x = 1,363.64

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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.