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Finding the Fourth Proportional to 2,069.80, 2,904.20 and 2,069.80

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Solution

The fourth proportional to 2,069.80, 2,904.20 and 2,069.80 is: 2,904.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,069.80 : 2,904.20 = 2,069.80 : x
  2. Step 2: Convert to fraction form
    2,069.80/2,904.20 = 2,069.80/x
  3. Step 3: Cross multiply
    2,069.80x = 2,904.20 × 2,069.80
  4. Step 4: Simplify right side
    2,069.80x = 6,011,113.16
  5. Step 5: Solve for x
    x = 6,011,113.16/2,069.80
  6. Step 6: Final answer
    x = 2,904.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.