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Finding the Fourth Proportional to 6,075.40, 9,113.10 and 1,971.40

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Solution

The fourth proportional to 6,075.40, 9,113.10 and 1,971.40 is: 2,957.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,075.40 : 9,113.10 = 1,971.40 : x
  2. Step 2: Convert to fraction form
    6,075.40/9,113.10 = 1,971.40/x
  3. Step 3: Cross multiply
    6,075.40x = 9,113.10 × 1,971.40
  4. Step 4: Simplify right side
    6,075.40x = 17,965,565.34
  5. Step 5: Solve for x
    x = 17,965,565.34/6,075.40
  6. Step 6: Final answer
    x = 2,957.10

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Double scale
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Similar ratio
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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.