Home / 3,390.87-4,671.02-2,895.15

Finding the Fourth Proportional to 3,390.87, 4,671.02 and 2,895.15

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Solution

The fourth proportional to 3,390.87, 4,671.02 and 2,895.15 is: 3,988.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.87 : 4,671.02 = 2,895.15 : x
  2. Step 2: Convert to fraction form
    3,390.87/4,671.02 = 2,895.15/x
  3. Step 3: Cross multiply
    3,390.87x = 4,671.02 × 2,895.15
  4. Step 4: Simplify right side
    3,390.87x = 13,523,303.55
  5. Step 5: Solve for x
    x = 13,523,303.55/3,390.87
  6. Step 6: Final answer
    x = 3,988.15

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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.