Home / 4,390.80-6,586.12-1,312.80

Finding the Fourth Proportional to 4,390.80, 6,586.12 and 1,312.80

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Solution

The fourth proportional to 4,390.80, 6,586.12 and 1,312.80 is: 1,969.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,390.80 : 6,586.12 = 1,312.80 : x
  2. Step 2: Convert to fraction form
    4,390.80/6,586.12 = 1,312.80/x
  3. Step 3: Cross multiply
    4,390.80x = 6,586.12 × 1,312.80
  4. Step 4: Simplify right side
    4,390.80x = 8,646,258.34
  5. Step 5: Solve for x
    x = 8,646,258.34/4,390.80
  6. Step 6: Final answer
    x = 1,969.18

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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.