Home / 5,780.63-8,670.97-1,398.08

Finding the Fourth Proportional to 5,780.63, 8,670.97 and 1,398.08

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Solution

The fourth proportional to 5,780.63, 8,670.97 and 1,398.08 is: 2,097.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.63 : 8,670.97 = 1,398.08 : x
  2. Step 2: Convert to fraction form
    5,780.63/8,670.97 = 1,398.08/x
  3. Step 3: Cross multiply
    5,780.63x = 8,670.97 × 1,398.08
  4. Step 4: Simplify right side
    5,780.63x = 12,122,733.16
  5. Step 5: Solve for x
    x = 12,122,733.16/5,780.63
  6. Step 6: Final answer
    x = 2,097.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.