Home / 3,156.49-4,355.56-1,830.13

Finding the Fourth Proportional to 3,156.49, 4,355.56 and 1,830.13

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Solution

The fourth proportional to 3,156.49, 4,355.56 and 1,830.13 is: 2,525.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.49 : 4,355.56 = 1,830.13 : x
  2. Step 2: Convert to fraction form
    3,156.49/4,355.56 = 1,830.13/x
  3. Step 3: Cross multiply
    3,156.49x = 4,355.56 × 1,830.13
  4. Step 4: Simplify right side
    3,156.49x = 7,971,241.02
  5. Step 5: Solve for x
    x = 7,971,241.02/3,156.49
  6. Step 6: Final answer
    x = 2,525.35

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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.