Home / 1,620.32-2,417.84-1,445.79

Finding the Fourth Proportional to 1,620.32, 2,417.84 and 1,445.79

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Solution

The fourth proportional to 1,620.32, 2,417.84 and 1,445.79 is: 2,157.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.32 : 2,417.84 = 1,445.79 : x
  2. Step 2: Convert to fraction form
    1,620.32/2,417.84 = 1,445.79/x
  3. Step 3: Cross multiply
    1,620.32x = 2,417.84 × 1,445.79
  4. Step 4: Simplify right side
    1,620.32x = 3,495,669.58
  5. Step 5: Solve for x
    x = 3,495,669.58/1,620.32
  6. Step 6: Final answer
    x = 2,157.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.