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Finding the Fourth Proportional to 1,700.12, 2,551.13 and 920.10

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Solution

The fourth proportional to 1,700.12, 2,551.13 and 920.10 is: 1,380.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,700.12 : 2,551.13 = 920.10 : x
  2. Step 2: Convert to fraction form
    1,700.12/2,551.13 = 920.10/x
  3. Step 3: Cross multiply
    1,700.12x = 2,551.13 × 920.10
  4. Step 4: Simplify right side
    1,700.12x = 2,347,290.11
  5. Step 5: Solve for x
    x = 2,347,290.11/1,700.12
  6. Step 6: Final answer
    x = 1,380.67

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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.