Home / 1,585.09-2,378.58-611.20

Finding the Fourth Proportional to 1,585.09, 2,378.58 and 611.20

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Solution

The fourth proportional to 1,585.09, 2,378.58 and 611.20 is: 917.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.09 : 2,378.58 = 611.20 : x
  2. Step 2: Convert to fraction form
    1,585.09/2,378.58 = 611.20/x
  3. Step 3: Cross multiply
    1,585.09x = 2,378.58 × 611.20
  4. Step 4: Simplify right side
    1,585.09x = 1,453,788.10
  5. Step 5: Solve for x
    x = 1,453,788.10/1,585.09
  6. Step 6: Final answer
    x = 917.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.