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Finding the Fourth Proportional to 1,953.48, 2,931.30 and 800.04

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Solution

The fourth proportional to 1,953.48, 2,931.30 and 800.04 is: 1,200.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.48 : 2,931.30 = 800.04 : x
  2. Step 2: Convert to fraction form
    1,953.48/2,931.30 = 800.04/x
  3. Step 3: Cross multiply
    1,953.48x = 2,931.30 × 800.04
  4. Step 4: Simplify right side
    1,953.48x = 2,345,157.25
  5. Step 5: Solve for x
    x = 2,345,157.25/1,953.48
  6. Step 6: Final answer
    x = 1,200.50

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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.