Home / 8,742.13-12,075.68-6,478.08

Finding the Fourth Proportional to 8,742.13, 12,075.68 and 6,478.08

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Solution

The fourth proportional to 8,742.13, 12,075.68 and 6,478.08 is: 8,948.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742.13 : 12,075.68 = 6,478.08 : x
  2. Step 2: Convert to fraction form
    8,742.13/12,075.68 = 6,478.08/x
  3. Step 3: Cross multiply
    8,742.13x = 12,075.68 × 6,478.08
  4. Step 4: Simplify right side
    8,742.13x = 78,227,192.01
  5. Step 5: Solve for x
    x = 78,227,192.01/8,742.13
  6. Step 6: Final answer
    x = 8,948.30

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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.