Home / 5,787.84-7,988.48-3,430.72

Finding the Fourth Proportional to 5,787.84, 7,988.48 and 3,430.72

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Solution

The fourth proportional to 5,787.84, 7,988.48 and 3,430.72 is: 4,735.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.84 : 7,988.48 = 3,430.72 : x
  2. Step 2: Convert to fraction form
    5,787.84/7,988.48 = 3,430.72/x
  3. Step 3: Cross multiply
    5,787.84x = 7,988.48 × 3,430.72
  4. Step 4: Simplify right side
    5,787.84x = 27,406,238.11
  5. Step 5: Solve for x
    x = 27,406,238.11/5,787.84
  6. Step 6: Final answer
    x = 4,735.14

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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.