Home / 4,897.78-7,345.59-1,387.71

Finding the Fourth Proportional to 4,897.78, 7,345.59 and 1,387.71

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Solution

The fourth proportional to 4,897.78, 7,345.59 and 1,387.71 is: 2,081.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,897.78 : 7,345.59 = 1,387.71 : x
  2. Step 2: Convert to fraction form
    4,897.78/7,345.59 = 1,387.71/x
  3. Step 3: Cross multiply
    4,897.78x = 7,345.59 × 1,387.71
  4. Step 4: Simplify right side
    4,897.78x = 10,193,541.07
  5. Step 5: Solve for x
    x = 10,193,541.07/4,897.78
  6. Step 6: Final answer
    x = 2,081.26

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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.