Home / 2,087.70-3,130.74-1,114.08

Finding the Fourth Proportional to 2,087.70, 3,130.74 and 1,114.08

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Solution

The fourth proportional to 2,087.70, 3,130.74 and 1,114.08 is: 1,670.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.70 : 3,130.74 = 1,114.08 : x
  2. Step 2: Convert to fraction form
    2,087.70/3,130.74 = 1,114.08/x
  3. Step 3: Cross multiply
    2,087.70x = 3,130.74 × 1,114.08
  4. Step 4: Simplify right side
    2,087.70x = 3,487,894.82
  5. Step 5: Solve for x
    x = 3,487,894.82/2,087.70
  6. Step 6: Final answer
    x = 1,670.69

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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.