Home / 2,911.65-4,018.07-1,585.35

Finding the Fourth Proportional to 2,911.65, 4,018.07 and 1,585.35

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Solution

The fourth proportional to 2,911.65, 4,018.07 and 1,585.35 is: 2,187.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.65 : 4,018.07 = 1,585.35 : x
  2. Step 2: Convert to fraction form
    2,911.65/4,018.07 = 1,585.35/x
  3. Step 3: Cross multiply
    2,911.65x = 4,018.07 × 1,585.35
  4. Step 4: Simplify right side
    2,911.65x = 6,370,047.27
  5. Step 5: Solve for x
    x = 6,370,047.27/2,911.65
  6. Step 6: Final answer
    x = 2,187.78

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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.