Home / 1,416.10-2,124.21-442.21

Finding the Fourth Proportional to 1,416.10, 2,124.21 and 442.21

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Solution

The fourth proportional to 1,416.10, 2,124.21 and 442.21 is: 663.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.10 : 2,124.21 = 442.21 : x
  2. Step 2: Convert to fraction form
    1,416.10/2,124.21 = 442.21/x
  3. Step 3: Cross multiply
    1,416.10x = 2,124.21 × 442.21
  4. Step 4: Simplify right side
    1,416.10x = 939,346.90
  5. Step 5: Solve for x
    x = 939,346.90/1,416.10
  6. Step 6: Final answer
    x = 663.33

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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.