Home / 2,087.40-2,880.36-1,155.84

Finding the Fourth Proportional to 2,087.40, 2,880.36 and 1,155.84

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Solution

The fourth proportional to 2,087.40, 2,880.36 and 1,155.84 is: 1,594.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.40 : 2,880.36 = 1,155.84 : x
  2. Step 2: Convert to fraction form
    2,087.40/2,880.36 = 1,155.84/x
  3. Step 3: Cross multiply
    2,087.40x = 2,880.36 × 1,155.84
  4. Step 4: Simplify right side
    2,087.40x = 3,329,235.30
  5. Step 5: Solve for x
    x = 3,329,235.30/2,087.40
  6. Step 6: Final answer
    x = 1,594.92

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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.