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Finding the Fourth Proportional to 1,740.15, 2,401.47 and 954.21

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Solution

The fourth proportional to 1,740.15, 2,401.47 and 954.21 is: 1,316.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,740.15 : 2,401.47 = 954.21 : x
  2. Step 2: Convert to fraction form
    1,740.15/2,401.47 = 954.21/x
  3. Step 3: Cross multiply
    1,740.15x = 2,401.47 × 954.21
  4. Step 4: Simplify right side
    1,740.15x = 2,291,506.69
  5. Step 5: Solve for x
    x = 2,291,506.69/1,740.15
  6. Step 6: Final answer
    x = 1,316.84

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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.