Home / 1,648.61-2,471.66-1,420.19

Finding the Fourth Proportional to 1,648.61, 2,471.66 and 1,420.19

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Solution

The fourth proportional to 1,648.61, 2,471.66 and 1,420.19 is: 2,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,648.61 : 2,471.66 = 1,420.19 : x
  2. Step 2: Convert to fraction form
    1,648.61/2,471.66 = 1,420.19/x
  3. Step 3: Cross multiply
    1,648.61x = 2,471.66 × 1,420.19
  4. Step 4: Simplify right side
    1,648.61x = 3,510,226.82
  5. Step 5: Solve for x
    x = 3,510,226.82/1,648.61
  6. Step 6: Final answer
    x = 2,129.20

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1.5x scale

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.