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Finding the Fourth Proportional to 5,007.88, 7,509.30 and 2,085.40

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Solution

The fourth proportional to 5,007.88, 7,509.30 and 2,085.40 is: 3,127.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,007.88 : 7,509.30 = 2,085.40 : x
  2. Step 2: Convert to fraction form
    5,007.88/7,509.30 = 2,085.40/x
  3. Step 3: Cross multiply
    5,007.88x = 7,509.30 × 2,085.40
  4. Step 4: Simplify right side
    5,007.88x = 15,659,894.22
  5. Step 5: Solve for x
    x = 15,659,894.22/5,007.88
  6. Step 6: Final answer
    x = 3,127.05

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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.