Home / 4,678.47-7,019.02-1,391.62

Finding the Fourth Proportional to 4,678.47, 7,019.02 and 1,391.62

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Solution

The fourth proportional to 4,678.47, 7,019.02 and 1,391.62 is: 2,087.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,678.47 : 7,019.02 = 1,391.62 : x
  2. Step 2: Convert to fraction form
    4,678.47/7,019.02 = 1,391.62/x
  3. Step 3: Cross multiply
    4,678.47x = 7,019.02 × 1,391.62
  4. Step 4: Simplify right side
    4,678.47x = 9,767,808.61
  5. Step 5: Solve for x
    x = 9,767,808.61/4,678.47
  6. Step 6: Final answer
    x = 2,087.82

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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.