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Finding the Fourth Proportional to 2,868.80, 4,297.80 and 1,477.40

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Solution

The fourth proportional to 2,868.80, 4,297.80 and 1,477.40 is: 2,213.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.80 : 4,297.80 = 1,477.40 : x
  2. Step 2: Convert to fraction form
    2,868.80/4,297.80 = 1,477.40/x
  3. Step 3: Cross multiply
    2,868.80x = 4,297.80 × 1,477.40
  4. Step 4: Simplify right side
    2,868.80x = 6,349,569.72
  5. Step 5: Solve for x
    x = 6,349,569.72/2,868.80
  6. Step 6: Final answer
    x = 2,213.32

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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.