Home / 1,445.12-2,166.30-622.58

Finding the Fourth Proportional to 1,445.12, 2,166.30 and 622.58

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Solution

The fourth proportional to 1,445.12, 2,166.30 and 622.58 is: 933.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.12 : 2,166.30 = 622.58 : x
  2. Step 2: Convert to fraction form
    1,445.12/2,166.30 = 622.58/x
  3. Step 3: Cross multiply
    1,445.12x = 2,166.30 × 622.58
  4. Step 4: Simplify right side
    1,445.12x = 1,348,695.05
  5. Step 5: Solve for x
    x = 1,348,695.05/1,445.12
  6. Step 6: Final answer
    x = 933.28

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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.