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Finding the Fourth Proportional to 4,699.79, 6,486.30 and 2,931.69

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Solution

The fourth proportional to 4,699.79, 6,486.30 and 2,931.69 is: 4,046.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,699.79 : 6,486.30 = 2,931.69 : x
  2. Step 2: Convert to fraction form
    4,699.79/6,486.30 = 2,931.69/x
  3. Step 3: Cross multiply
    4,699.79x = 6,486.30 × 2,931.69
  4. Step 4: Simplify right side
    4,699.79x = 19,015,820.85
  5. Step 5: Solve for x
    x = 19,015,820.85/4,699.79
  6. Step 6: Final answer
    x = 4,046.10

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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.