Home / 1,970.39-2,719.26-1,086.19

Finding the Fourth Proportional to 1,970.39, 2,719.26 and 1,086.19

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Solution

The fourth proportional to 1,970.39, 2,719.26 and 1,086.19 is: 1,499.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.39 : 2,719.26 = 1,086.19 : x
  2. Step 2: Convert to fraction form
    1,970.39/2,719.26 = 1,086.19/x
  3. Step 3: Cross multiply
    1,970.39x = 2,719.26 × 1,086.19
  4. Step 4: Simplify right side
    1,970.39x = 2,953,613.99
  5. Step 5: Solve for x
    x = 2,953,613.99/1,970.39
  6. Step 6: Final answer
    x = 1,499.00

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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.