Home / 2,911.45-4,017.71-1,585.15

Finding the Fourth Proportional to 2,911.45, 4,017.71 and 1,585.15

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Solution

The fourth proportional to 2,911.45, 4,017.71 and 1,585.15 is: 2,187.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.45 : 4,017.71 = 1,585.15 : x
  2. Step 2: Convert to fraction form
    2,911.45/4,017.71 = 1,585.15/x
  3. Step 3: Cross multiply
    2,911.45x = 4,017.71 × 1,585.15
  4. Step 4: Simplify right side
    2,911.45x = 6,368,652.92
  5. Step 5: Solve for x
    x = 6,368,652.92/2,911.45
  6. Step 6: Final answer
    x = 2,187.45

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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.