Home / 8,430.79-12,643.08-2,807.41

Finding the Fourth Proportional to 8,430.79, 12,643.08 and 2,807.41

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Solution

The fourth proportional to 8,430.79, 12,643.08 and 2,807.41 is: 4,210.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.79 : 12,643.08 = 2,807.41 : x
  2. Step 2: Convert to fraction form
    8,430.79/12,643.08 = 2,807.41/x
  3. Step 3: Cross multiply
    8,430.79x = 12,643.08 × 2,807.41
  4. Step 4: Simplify right side
    8,430.79x = 35,494,309.22
  5. Step 5: Solve for x
    x = 35,494,309.22/8,430.79
  6. Step 6: Final answer
    x = 4,210.08

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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.