Home / 1,681.55-2,523.98-1,405.67

Finding the Fourth Proportional to 1,681.55, 2,523.98 and 1,405.67

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Solution

The fourth proportional to 1,681.55, 2,523.98 and 1,405.67 is: 2,109.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.55 : 2,523.98 = 1,405.67 : x
  2. Step 2: Convert to fraction form
    1,681.55/2,523.98 = 1,405.67/x
  3. Step 3: Cross multiply
    1,681.55x = 2,523.98 × 1,405.67
  4. Step 4: Simplify right side
    1,681.55x = 3,547,882.25
  5. Step 5: Solve for x
    x = 3,547,882.25/1,681.55
  6. Step 6: Final answer
    x = 2,109.88

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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.