Home / 1,585.84-2,187.36-1,087.60

Finding the Fourth Proportional to 1,585.84, 2,187.36 and 1,087.60

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Solution

The fourth proportional to 1,585.84, 2,187.36 and 1,087.60 is: 1,500.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.84 : 2,187.36 = 1,087.60 : x
  2. Step 2: Convert to fraction form
    1,585.84/2,187.36 = 1,087.60/x
  3. Step 3: Cross multiply
    1,585.84x = 2,187.36 × 1,087.60
  4. Step 4: Simplify right side
    1,585.84x = 2,378,972.74
  5. Step 5: Solve for x
    x = 2,378,972.74/1,585.84
  6. Step 6: Final answer
    x = 1,500.13

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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.