Home / 7,830.16-10,808.35-4,686.34

Finding the Fourth Proportional to 7,830.16, 10,808.35 and 4,686.34

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Solution

The fourth proportional to 7,830.16, 10,808.35 and 4,686.34 is: 6,468.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,830.16 : 10,808.35 = 4,686.34 : x
  2. Step 2: Convert to fraction form
    7,830.16/10,808.35 = 4,686.34/x
  3. Step 3: Cross multiply
    7,830.16x = 10,808.35 × 4,686.34
  4. Step 4: Simplify right side
    7,830.16x = 50,651,602.94
  5. Step 5: Solve for x
    x = 50,651,602.94/7,830.16
  6. Step 6: Final answer
    x = 6,468.78

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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.