Home / 2,145.60-2,962.32-1,647.28

Finding the Fourth Proportional to 2,145.60, 2,962.32 and 1,647.28

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Solution

The fourth proportional to 2,145.60, 2,962.32 and 1,647.28 is: 2,274.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.60 : 2,962.32 = 1,647.28 : x
  2. Step 2: Convert to fraction form
    2,145.60/2,962.32 = 1,647.28/x
  3. Step 3: Cross multiply
    2,145.60x = 2,962.32 × 1,647.28
  4. Step 4: Simplify right side
    2,145.60x = 4,879,770.49
  5. Step 5: Solve for x
    x = 4,879,770.49/2,145.60
  6. Step 6: Final answer
    x = 2,274.32

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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.