Home / 4,970.49-6,860.64-2,847.21

Finding the Fourth Proportional to 4,970.49, 6,860.64 and 2,847.21

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Solution

The fourth proportional to 4,970.49, 6,860.64 and 2,847.21 is: 3,929.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,970.49 : 6,860.64 = 2,847.21 : x
  2. Step 2: Convert to fraction form
    4,970.49/6,860.64 = 2,847.21/x
  3. Step 3: Cross multiply
    4,970.49x = 6,860.64 × 2,847.21
  4. Step 4: Simplify right side
    4,970.49x = 19,533,682.81
  5. Step 5: Solve for x
    x = 19,533,682.81/4,970.49
  6. Step 6: Final answer
    x = 3,929.93

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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.