Home / 1,510.18-2,084.30-847.20

Finding the Fourth Proportional to 1,510.18, 2,084.30 and 847.20

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Solution

The fourth proportional to 1,510.18, 2,084.30 and 847.20 is: 1,169.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.18 : 2,084.30 = 847.20 : x
  2. Step 2: Convert to fraction form
    1,510.18/2,084.30 = 847.20/x
  3. Step 3: Cross multiply
    1,510.18x = 2,084.30 × 847.20
  4. Step 4: Simplify right side
    1,510.18x = 1,765,818.96
  5. Step 5: Solve for x
    x = 1,765,818.96/1,510.18
  6. Step 6: Final answer
    x = 1,169.28

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Double scale
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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.