Home / 1,530.90-2,111.40-1,006.02

Finding the Fourth Proportional to 1,530.90, 2,111.40 and 1,006.02

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Solution

The fourth proportional to 1,530.90, 2,111.40 and 1,006.02 is: 1,387.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.90 : 2,111.40 = 1,006.02 : x
  2. Step 2: Convert to fraction form
    1,530.90/2,111.40 = 1,006.02/x
  3. Step 3: Cross multiply
    1,530.90x = 2,111.40 × 1,006.02
  4. Step 4: Simplify right side
    1,530.90x = 2,124,110.63
  5. Step 5: Solve for x
    x = 2,124,110.63/1,530.90
  6. Step 6: Final answer
    x = 1,387.49

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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.