Home / 1,459.53-2,178.26-1,420.65

Finding the Fourth Proportional to 1,459.53, 2,178.26 and 1,420.65

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Solution

The fourth proportional to 1,459.53, 2,178.26 and 1,420.65 is: 2,120.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,459.53 : 2,178.26 = 1,420.65 : x
  2. Step 2: Convert to fraction form
    1,459.53/2,178.26 = 1,420.65/x
  3. Step 3: Cross multiply
    1,459.53x = 2,178.26 × 1,420.65
  4. Step 4: Simplify right side
    1,459.53x = 3,094,537.97
  5. Step 5: Solve for x
    x = 3,094,537.97/1,459.53
  6. Step 6: Final answer
    x = 2,120.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.