Home / 1,590.26-2,191.32-1,309.59

Finding the Fourth Proportional to 1,590.26, 2,191.32 and 1,309.59

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Solution

The fourth proportional to 1,590.26, 2,191.32 and 1,309.59 is: 1,804.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.26 : 2,191.32 = 1,309.59 : x
  2. Step 2: Convert to fraction form
    1,590.26/2,191.32 = 1,309.59/x
  3. Step 3: Cross multiply
    1,590.26x = 2,191.32 × 1,309.59
  4. Step 4: Simplify right side
    1,590.26x = 2,869,730.76
  5. Step 5: Solve for x
    x = 2,869,730.76/1,590.26
  6. Step 6: Final answer
    x = 1,804.57

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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.