Home / 9,715.89-14,570.19-3,140.31

Finding the Fourth Proportional to 9,715.89, 14,570.19 and 3,140.31

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Solution

The fourth proportional to 9,715.89, 14,570.19 and 3,140.31 is: 4,709.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,715.89 : 14,570.19 = 3,140.31 : x
  2. Step 2: Convert to fraction form
    9,715.89/14,570.19 = 3,140.31/x
  3. Step 3: Cross multiply
    9,715.89x = 14,570.19 × 3,140.31
  4. Step 4: Simplify right side
    9,715.89x = 45,754,913.36
  5. Step 5: Solve for x
    x = 45,754,913.36/9,715.89
  6. Step 6: Final answer
    x = 4,709.29

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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.