Home / 7,851.77-10,835.67-4,315.21

Finding the Fourth Proportional to 7,851.77, 10,835.67 and 4,315.21

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Solution

The fourth proportional to 7,851.77, 10,835.67 and 4,315.21 is: 5,955.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.77 : 10,835.67 = 4,315.21 : x
  2. Step 2: Convert to fraction form
    7,851.77/10,835.67 = 4,315.21/x
  3. Step 3: Cross multiply
    7,851.77x = 10,835.67 × 4,315.21
  4. Step 4: Simplify right side
    7,851.77x = 46,758,115.79
  5. Step 5: Solve for x
    x = 46,758,115.79/7,851.77
  6. Step 6: Final answer
    x = 5,955.11

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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.