Home / 1,445.23-2,168.07-714.85

Finding the Fourth Proportional to 1,445.23, 2,168.07 and 714.85

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Solution

The fourth proportional to 1,445.23, 2,168.07 and 714.85 is: 1,072.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.23 : 2,168.07 = 714.85 : x
  2. Step 2: Convert to fraction form
    1,445.23/2,168.07 = 714.85/x
  3. Step 3: Cross multiply
    1,445.23x = 2,168.07 × 714.85
  4. Step 4: Simplify right side
    1,445.23x = 1,549,844.84
  5. Step 5: Solve for x
    x = 1,549,844.84/1,445.23
  6. Step 6: Final answer
    x = 1,072.39

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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.