Home / 1,590.90-2,194.27-927.72

Finding the Fourth Proportional to 1,590.90, 2,194.27 and 927.72

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Solution

The fourth proportional to 1,590.90, 2,194.27 and 927.72 is: 1,279.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.90 : 2,194.27 = 927.72 : x
  2. Step 2: Convert to fraction form
    1,590.90/2,194.27 = 927.72/x
  3. Step 3: Cross multiply
    1,590.90x = 2,194.27 × 927.72
  4. Step 4: Simplify right side
    1,590.90x = 2,035,668.16
  5. Step 5: Solve for x
    x = 2,035,668.16/1,590.90
  6. Step 6: Final answer
    x = 1,279.57

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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.