Home / 5,010.40-7,515.50-1,312.85

Finding the Fourth Proportional to 5,010.40, 7,515.50 and 1,312.85

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Solution

The fourth proportional to 5,010.40, 7,515.50 and 1,312.85 is: 1,969.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,010.40 : 7,515.50 = 1,312.85 : x
  2. Step 2: Convert to fraction form
    5,010.40/7,515.50 = 1,312.85/x
  3. Step 3: Cross multiply
    5,010.40x = 7,515.50 × 1,312.85
  4. Step 4: Simplify right side
    5,010.40x = 9,866,736.40
  5. Step 5: Solve for x
    x = 9,866,736.40/5,010.40
  6. Step 6: Final answer
    x = 1,969.25

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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.