Home / 1,530.51-2,107.45-1,320.31

Finding the Fourth Proportional to 1,530.51, 2,107.45 and 1,320.31

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Solution

The fourth proportional to 1,530.51, 2,107.45 and 1,320.31 is: 1,818.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.51 : 2,107.45 = 1,320.31 : x
  2. Step 2: Convert to fraction form
    1,530.51/2,107.45 = 1,320.31/x
  3. Step 3: Cross multiply
    1,530.51x = 2,107.45 × 1,320.31
  4. Step 4: Simplify right side
    1,530.51x = 2,782,491.59
  5. Step 5: Solve for x
    x = 2,782,491.59/1,530.51
  6. Step 6: Final answer
    x = 1,818.02

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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.