Home / 1,555.29-2,148.35-1,161.63

Finding the Fourth Proportional to 1,555.29, 2,148.35 and 1,161.63

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Solution

The fourth proportional to 1,555.29, 2,148.35 and 1,161.63 is: 1,604.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.29 : 2,148.35 = 1,161.63 : x
  2. Step 2: Convert to fraction form
    1,555.29/2,148.35 = 1,161.63/x
  3. Step 3: Cross multiply
    1,555.29x = 2,148.35 × 1,161.63
  4. Step 4: Simplify right side
    1,555.29x = 2,495,582.00
  5. Step 5: Solve for x
    x = 2,495,582.00/1,555.29
  6. Step 6: Final answer
    x = 1,604.58

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1.5x scale

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.