Home / 2,911.51-4,017.83-1,585.20

Finding the Fourth Proportional to 2,911.51, 4,017.83 and 1,585.20

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Solution

The fourth proportional to 2,911.51, 4,017.83 and 1,585.20 is: 2,187.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.51 : 4,017.83 = 1,585.20 : x
  2. Step 2: Convert to fraction form
    2,911.51/4,017.83 = 1,585.20/x
  3. Step 3: Cross multiply
    2,911.51x = 4,017.83 × 1,585.20
  4. Step 4: Simplify right side
    2,911.51x = 6,369,064.12
  5. Step 5: Solve for x
    x = 6,369,064.12/2,911.51
  6. Step 6: Final answer
    x = 2,187.55

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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.