Home / 7,615.63-10,510.78-4,471.21

Finding the Fourth Proportional to 7,615.63, 10,510.78 and 4,471.21

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Solution

The fourth proportional to 7,615.63, 10,510.78 and 4,471.21 is: 6,170.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,615.63 : 10,510.78 = 4,471.21 : x
  2. Step 2: Convert to fraction form
    7,615.63/10,510.78 = 4,471.21/x
  3. Step 3: Cross multiply
    7,615.63x = 10,510.78 × 4,471.21
  4. Step 4: Simplify right side
    7,615.63x = 46,995,852.09
  5. Step 5: Solve for x
    x = 46,995,852.09/7,615.63
  6. Step 6: Final answer
    x = 6,170.98

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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.