Home / 2,518.90-3,779.60-1,643.11

Finding the Fourth Proportional to 2,518.90, 3,779.60 and 1,643.11

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Solution

The fourth proportional to 2,518.90, 3,779.60 and 1,643.11 is: 2,465.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,518.90 : 3,779.60 = 1,643.11 : x
  2. Step 2: Convert to fraction form
    2,518.90/3,779.60 = 1,643.11/x
  3. Step 3: Cross multiply
    2,518.90x = 3,779.60 × 1,643.11
  4. Step 4: Simplify right side
    2,518.90x = 6,210,280.89
  5. Step 5: Solve for x
    x = 6,210,280.89/2,518.90
  6. Step 6: Final answer
    x = 2,465.48

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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.