Home / 1,484.21-2,215.35-1,309.11

Finding the Fourth Proportional to 1,484.21, 2,215.35 and 1,309.11

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Solution

The fourth proportional to 1,484.21, 2,215.35 and 1,309.11 is: 1,954.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,484.21 : 2,215.35 = 1,309.11 : x
  2. Step 2: Convert to fraction form
    1,484.21/2,215.35 = 1,309.11/x
  3. Step 3: Cross multiply
    1,484.21x = 2,215.35 × 1,309.11
  4. Step 4: Simplify right side
    1,484.21x = 2,900,139.29
  5. Step 5: Solve for x
    x = 2,900,139.29/1,484.21
  6. Step 6: Final answer
    x = 1,954.00

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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.