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Finding the Fourth Proportional to 2,870.42, 4,305.02 and 1,021.65

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Solution

The fourth proportional to 2,870.42, 4,305.02 and 1,021.65 is: 1,532.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.42 : 4,305.02 = 1,021.65 : x
  2. Step 2: Convert to fraction form
    2,870.42/4,305.02 = 1,021.65/x
  3. Step 3: Cross multiply
    2,870.42x = 4,305.02 × 1,021.65
  4. Step 4: Simplify right side
    2,870.42x = 4,398,218.57
  5. Step 5: Solve for x
    x = 4,398,218.57/2,870.42
  6. Step 6: Final answer
    x = 1,532.26

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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.