Home / 5,312.84-7,969.68-1,615.40

Finding the Fourth Proportional to 5,312.84, 7,969.68 and 1,615.40

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Solution

The fourth proportional to 5,312.84, 7,969.68 and 1,615.40 is: 2,423.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,312.84 : 7,969.68 = 1,615.40 : x
  2. Step 2: Convert to fraction form
    5,312.84/7,969.68 = 1,615.40/x
  3. Step 3: Cross multiply
    5,312.84x = 7,969.68 × 1,615.40
  4. Step 4: Simplify right side
    5,312.84x = 12,874,181.22
  5. Step 5: Solve for x
    x = 12,874,181.22/5,312.84
  6. Step 6: Final answer
    x = 2,423.22

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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.