Home / 7,851.78-10,835.66-4,315.08

Finding the Fourth Proportional to 7,851.78, 10,835.66 and 4,315.08

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Solution

The fourth proportional to 7,851.78, 10,835.66 and 4,315.08 is: 5,954.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.78 : 10,835.66 = 4,315.08 : x
  2. Step 2: Convert to fraction form
    7,851.78/10,835.66 = 4,315.08/x
  3. Step 3: Cross multiply
    7,851.78x = 10,835.66 × 4,315.08
  4. Step 4: Simplify right side
    7,851.78x = 46,756,718.18
  5. Step 5: Solve for x
    x = 46,756,718.18/7,851.78
  6. Step 6: Final answer
    x = 5,954.92

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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.