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Finding the Fourth Proportional to 3,503.79, 4,835.21 and 1,931.88

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Solution

The fourth proportional to 3,503.79, 4,835.21 and 1,931.88 is: 2,665.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,503.79 : 4,835.21 = 1,931.88 : x
  2. Step 2: Convert to fraction form
    3,503.79/4,835.21 = 1,931.88/x
  3. Step 3: Cross multiply
    3,503.79x = 4,835.21 × 1,931.88
  4. Step 4: Simplify right side
    3,503.79x = 9,341,064.83
  5. Step 5: Solve for x
    x = 9,341,064.83/3,503.79
  6. Step 6: Final answer
    x = 2,665.99

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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.