Home / 7,862.40-10,851.30-4,720.32

Finding the Fourth Proportional to 7,862.40, 10,851.30 and 4,720.32

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Solution

The fourth proportional to 7,862.40, 10,851.30 and 4,720.32 is: 6,514.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,862.40 : 10,851.30 = 4,720.32 : x
  2. Step 2: Convert to fraction form
    7,862.40/10,851.30 = 4,720.32/x
  3. Step 3: Cross multiply
    7,862.40x = 10,851.30 × 4,720.32
  4. Step 4: Simplify right side
    7,862.40x = 51,221,608.42
  5. Step 5: Solve for x
    x = 51,221,608.42/7,862.40
  6. Step 6: Final answer
    x = 6,514.75

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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.