Home / 6,688.95-10,030.31-2,991.20

Finding the Fourth Proportional to 6,688.95, 10,030.31 and 2,991.20

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Solution

The fourth proportional to 6,688.95, 10,030.31 and 2,991.20 is: 4,485.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,688.95 : 10,030.31 = 2,991.20 : x
  2. Step 2: Convert to fraction form
    6,688.95/10,030.31 = 2,991.20/x
  3. Step 3: Cross multiply
    6,688.95x = 10,030.31 × 2,991.20
  4. Step 4: Simplify right side
    6,688.95x = 30,002,598.16
  5. Step 5: Solve for x
    x = 30,002,598.16/6,688.95
  6. Step 6: Final answer
    x = 4,485.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.