Home / 2,087.52-3,130.40-1,047.12

Finding the Fourth Proportional to 2,087.52, 3,130.40 and 1,047.12

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Solution

The fourth proportional to 2,087.52, 3,130.40 and 1,047.12 is: 1,570.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.52 : 3,130.40 = 1,047.12 : x
  2. Step 2: Convert to fraction form
    2,087.52/3,130.40 = 1,047.12/x
  3. Step 3: Cross multiply
    2,087.52x = 3,130.40 × 1,047.12
  4. Step 4: Simplify right side
    2,087.52x = 3,277,904.45
  5. Step 5: Solve for x
    x = 3,277,904.45/2,087.52
  6. Step 6: Final answer
    x = 1,570.24

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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.