Home / 7,421.84-10,243.08-4,278.05

Finding the Fourth Proportional to 7,421.84, 10,243.08 and 4,278.05

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Solution

The fourth proportional to 7,421.84, 10,243.08 and 4,278.05 is: 5,904.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.84 : 10,243.08 = 4,278.05 : x
  2. Step 2: Convert to fraction form
    7,421.84/10,243.08 = 4,278.05/x
  3. Step 3: Cross multiply
    7,421.84x = 10,243.08 × 4,278.05
  4. Step 4: Simplify right side
    7,421.84x = 43,820,357.18
  5. Step 5: Solve for x
    x = 43,820,357.18/7,421.84
  6. Step 6: Final answer
    x = 5,904.25

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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.