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Finding the Fourth Proportional to 2,800.08, 3,860.88 and 1,856.64

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Solution

The fourth proportional to 2,800.08, 3,860.88 and 1,856.64 is: 2,560.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.08 : 3,860.88 = 1,856.64 : x
  2. Step 2: Convert to fraction form
    2,800.08/3,860.88 = 1,856.64/x
  3. Step 3: Cross multiply
    2,800.08x = 3,860.88 × 1,856.64
  4. Step 4: Simplify right side
    2,800.08x = 7,168,264.24
  5. Step 5: Solve for x
    x = 7,168,264.24/2,800.08
  6. Step 6: Final answer
    x = 2,560.02

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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.