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Finding the Fourth Proportional to 2,445.81, 3,668.65 and 714.45

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Solution

The fourth proportional to 2,445.81, 3,668.65 and 714.45 is: 1,071.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,445.81 : 3,668.65 = 714.45 : x
  2. Step 2: Convert to fraction form
    2,445.81/3,668.65 = 714.45/x
  3. Step 3: Cross multiply
    2,445.81x = 3,668.65 × 714.45
  4. Step 4: Simplify right side
    2,445.81x = 2,621,066.99
  5. Step 5: Solve for x
    x = 2,621,066.99/2,445.81
  6. Step 6: Final answer
    x = 1,071.66

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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.