Home / 1,911.22-2,636.48-1,577.70

Finding the Fourth Proportional to 1,911.22, 2,636.48 and 1,577.70

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Solution

The fourth proportional to 1,911.22, 2,636.48 and 1,577.70 is: 2,176.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.22 : 2,636.48 = 1,577.70 : x
  2. Step 2: Convert to fraction form
    1,911.22/2,636.48 = 1,577.70/x
  3. Step 3: Cross multiply
    1,911.22x = 2,636.48 × 1,577.70
  4. Step 4: Simplify right side
    1,911.22x = 4,159,574.50
  5. Step 5: Solve for x
    x = 4,159,574.50/1,911.22
  6. Step 6: Final answer
    x = 2,176.40

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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.