Home / 1,561.24-2,154.96-1,030.51

Finding the Fourth Proportional to 1,561.24, 2,154.96 and 1,030.51

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Solution

The fourth proportional to 1,561.24, 2,154.96 and 1,030.51 is: 1,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.24 : 2,154.96 = 1,030.51 : x
  2. Step 2: Convert to fraction form
    1,561.24/2,154.96 = 1,030.51/x
  3. Step 3: Cross multiply
    1,561.24x = 2,154.96 × 1,030.51
  4. Step 4: Simplify right side
    1,561.24x = 2,220,702.44
  5. Step 5: Solve for x
    x = 2,220,702.44/1,561.24
  6. Step 6: Final answer
    x = 1,422.40

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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.