Home / 1,416.20-2,123.78-491.52

Finding the Fourth Proportional to 1,416.20, 2,123.78 and 491.52

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Solution

The fourth proportional to 1,416.20, 2,123.78 and 491.52 is: 737.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.20 : 2,123.78 = 491.52 : x
  2. Step 2: Convert to fraction form
    1,416.20/2,123.78 = 491.52/x
  3. Step 3: Cross multiply
    1,416.20x = 2,123.78 × 491.52
  4. Step 4: Simplify right side
    1,416.20x = 1,043,880.35
  5. Step 5: Solve for x
    x = 1,043,880.35/1,416.20
  6. Step 6: Final answer
    x = 737.10

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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.