Home / 2,938.88-4,056.48-1,680.60

Finding the Fourth Proportional to 2,938.88, 4,056.48 and 1,680.60

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Solution

The fourth proportional to 2,938.88, 4,056.48 and 1,680.60 is: 2,319.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,938.88 : 4,056.48 = 1,680.60 : x
  2. Step 2: Convert to fraction form
    2,938.88/4,056.48 = 1,680.60/x
  3. Step 3: Cross multiply
    2,938.88x = 4,056.48 × 1,680.60
  4. Step 4: Simplify right side
    2,938.88x = 6,817,320.29
  5. Step 5: Solve for x
    x = 6,817,320.29/2,938.88
  6. Step 6: Final answer
    x = 2,319.70

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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.