Home / 1,475.95-2,215.49-1,086.40

Finding the Fourth Proportional to 1,475.95, 2,215.49 and 1,086.40

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Solution

The fourth proportional to 1,475.95, 2,215.49 and 1,086.40 is: 1,630.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.95 : 2,215.49 = 1,086.40 : x
  2. Step 2: Convert to fraction form
    1,475.95/2,215.49 = 1,086.40/x
  3. Step 3: Cross multiply
    1,475.95x = 2,215.49 × 1,086.40
  4. Step 4: Simplify right side
    1,475.95x = 2,406,908.34
  5. Step 5: Solve for x
    x = 2,406,908.34/1,475.95
  6. Step 6: Final answer
    x = 1,630.75

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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.