Home / 1,530.10-2,112.05-1,018.95

Finding the Fourth Proportional to 1,530.10, 2,112.05 and 1,018.95

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Solution

The fourth proportional to 1,530.10, 2,112.05 and 1,018.95 is: 1,406.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.10 : 2,112.05 = 1,018.95 : x
  2. Step 2: Convert to fraction form
    1,530.10/2,112.05 = 1,018.95/x
  3. Step 3: Cross multiply
    1,530.10x = 2,112.05 × 1,018.95
  4. Step 4: Simplify right side
    1,530.10x = 2,152,073.35
  5. Step 5: Solve for x
    x = 2,152,073.35/1,530.10
  6. Step 6: Final answer
    x = 1,406.49

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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.