Home / 7,815.36-10,790.40-6,143.52

Finding the Fourth Proportional to 7,815.36, 10,790.40 and 6,143.52

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Solution

The fourth proportional to 7,815.36, 10,790.40 and 6,143.52 is: 8,482.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.36 : 10,790.40 = 6,143.52 : x
  2. Step 2: Convert to fraction form
    7,815.36/10,790.40 = 6,143.52/x
  3. Step 3: Cross multiply
    7,815.36x = 10,790.40 × 6,143.52
  4. Step 4: Simplify right side
    7,815.36x = 66,291,038.21
  5. Step 5: Solve for x
    x = 66,291,038.21/7,815.36
  6. Step 6: Final answer
    x = 8,482.15

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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.