Home / 2,920.48-4,031.68-1,874.32

Finding the Fourth Proportional to 2,920.48, 4,031.68 and 1,874.32

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Solution

The fourth proportional to 2,920.48, 4,031.68 and 1,874.32 is: 2,587.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.48 : 4,031.68 = 1,874.32 : x
  2. Step 2: Convert to fraction form
    2,920.48/4,031.68 = 1,874.32/x
  3. Step 3: Cross multiply
    2,920.48x = 4,031.68 × 1,874.32
  4. Step 4: Simplify right side
    2,920.48x = 7,556,658.46
  5. Step 5: Solve for x
    x = 7,556,658.46/2,920.48
  6. Step 6: Final answer
    x = 2,587.47

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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.