Home / 4,970.72-6,859.77-2,980.89

Finding the Fourth Proportional to 4,970.72, 6,859.77 and 2,980.89

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Solution

The fourth proportional to 4,970.72, 6,859.77 and 2,980.89 is: 4,113.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,970.72 : 6,859.77 = 2,980.89 : x
  2. Step 2: Convert to fraction form
    4,970.72/6,859.77 = 2,980.89/x
  3. Step 3: Cross multiply
    4,970.72x = 6,859.77 × 2,980.89
  4. Step 4: Simplify right side
    4,970.72x = 20,448,219.80
  5. Step 5: Solve for x
    x = 20,448,219.80/4,970.72
  6. Step 6: Final answer
    x = 4,113.73

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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.