Home / 1,585.06-2,378.30-853.79

Finding the Fourth Proportional to 1,585.06, 2,378.30 and 853.79

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Solution

The fourth proportional to 1,585.06, 2,378.30 and 853.79 is: 1,281.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.06 : 2,378.30 = 853.79 : x
  2. Step 2: Convert to fraction form
    1,585.06/2,378.30 = 853.79/x
  3. Step 3: Cross multiply
    1,585.06x = 2,378.30 × 853.79
  4. Step 4: Simplify right side
    1,585.06x = 2,030,552.60
  5. Step 5: Solve for x
    x = 2,030,552.60/1,585.06
  6. Step 6: Final answer
    x = 1,281.06

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1.5x scale

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.