Home / 3,656.10-5,045.40-1,977.50

Finding the Fourth Proportional to 3,656.10, 5,045.40 and 1,977.50

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Solution

The fourth proportional to 3,656.10, 5,045.40 and 1,977.50 is: 2,728.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,656.10 : 5,045.40 = 1,977.50 : x
  2. Step 2: Convert to fraction form
    3,656.10/5,045.40 = 1,977.50/x
  3. Step 3: Cross multiply
    3,656.10x = 5,045.40 × 1,977.50
  4. Step 4: Simplify right side
    3,656.10x = 9,977,278.50
  5. Step 5: Solve for x
    x = 9,977,278.50/3,656.10
  6. Step 6: Final answer
    x = 2,728.94

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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.