Home / 7,851.87-10,835.76-4,315.15

Finding the Fourth Proportional to 7,851.87, 10,835.76 and 4,315.15

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Solution

The fourth proportional to 7,851.87, 10,835.76 and 4,315.15 is: 5,955.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.87 : 10,835.76 = 4,315.15 : x
  2. Step 2: Convert to fraction form
    7,851.87/10,835.76 = 4,315.15/x
  3. Step 3: Cross multiply
    7,851.87x = 10,835.76 × 4,315.15
  4. Step 4: Simplify right side
    7,851.87x = 46,757,959.49
  5. Step 5: Solve for x
    x = 46,757,959.49/7,851.87
  6. Step 6: Final answer
    x = 5,955.01

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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.