Home / 2,119.40-2,922-1,530.08

Finding the Fourth Proportional to 2,119.40, 2,922 and 1,530.08

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Solution

The fourth proportional to 2,119.40, 2,922 and 1,530.08 is: 2,109.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.40 : 2,922 = 1,530.08 : x
  2. Step 2: Convert to fraction form
    2,119.40/2,922 = 1,530.08/x
  3. Step 3: Cross multiply
    2,119.40x = 2,922 × 1,530.08
  4. Step 4: Simplify right side
    2,119.40x = 4,470,893.76
  5. Step 5: Solve for x
    x = 4,470,893.76/2,119.40
  6. Step 6: Final answer
    x = 2,109.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.