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Finding the Fourth Proportional to 1,754.80, 2,421.63 and 968.87

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Solution

The fourth proportional to 1,754.80, 2,421.63 and 968.87 is: 1,337.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,754.80 : 2,421.63 = 968.87 : x
  2. Step 2: Convert to fraction form
    1,754.80/2,421.63 = 968.87/x
  3. Step 3: Cross multiply
    1,754.80x = 2,421.63 × 968.87
  4. Step 4: Simplify right side
    1,754.80x = 2,346,244.66
  5. Step 5: Solve for x
    x = 2,346,244.66/1,754.80
  6. Step 6: Final answer
    x = 1,337.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.