Home / 1,585.20-2,187.59-922.07

Finding the Fourth Proportional to 1,585.20, 2,187.59 and 922.07

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Solution

The fourth proportional to 1,585.20, 2,187.59 and 922.07 is: 1,272.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.20 : 2,187.59 = 922.07 : x
  2. Step 2: Convert to fraction form
    1,585.20/2,187.59 = 922.07/x
  3. Step 3: Cross multiply
    1,585.20x = 2,187.59 × 922.07
  4. Step 4: Simplify right side
    1,585.20x = 2,017,095.56
  5. Step 5: Solve for x
    x = 2,017,095.56/1,585.20
  6. Step 6: Final answer
    x = 1,272.45

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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.