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Finding the Fourth Proportional to 2,886.69, 3,983.63 and 1,560.40

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Solution

The fourth proportional to 2,886.69, 3,983.63 and 1,560.40 is: 2,153.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.69 : 3,983.63 = 1,560.40 : x
  2. Step 2: Convert to fraction form
    2,886.69/3,983.63 = 1,560.40/x
  3. Step 3: Cross multiply
    2,886.69x = 3,983.63 × 1,560.40
  4. Step 4: Simplify right side
    2,886.69x = 6,216,056.25
  5. Step 5: Solve for x
    x = 6,216,056.25/2,886.69
  6. Step 6: Final answer
    x = 2,153.35

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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.