Home / 5,218.07-7,780.55-4,638.51

Finding the Fourth Proportional to 5,218.07, 7,780.55 and 4,638.51

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Solution

The fourth proportional to 5,218.07, 7,780.55 and 4,638.51 is: 6,916.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.07 : 7,780.55 = 4,638.51 : x
  2. Step 2: Convert to fraction form
    5,218.07/7,780.55 = 4,638.51/x
  3. Step 3: Cross multiply
    5,218.07x = 7,780.55 × 4,638.51
  4. Step 4: Simplify right side
    5,218.07x = 36,090,158.98
  5. Step 5: Solve for x
    x = 36,090,158.98/5,218.07
  6. Step 6: Final answer
    x = 6,916.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.