Home / 1,502.79-2,070.55-1,123.09

Finding the Fourth Proportional to 1,502.79, 2,070.55 and 1,123.09

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Solution

The fourth proportional to 1,502.79, 2,070.55 and 1,123.09 is: 1,547.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,502.79 : 2,070.55 = 1,123.09 : x
  2. Step 2: Convert to fraction form
    1,502.79/2,070.55 = 1,123.09/x
  3. Step 3: Cross multiply
    1,502.79x = 2,070.55 × 1,123.09
  4. Step 4: Simplify right side
    1,502.79x = 2,325,414.00
  5. Step 5: Solve for x
    x = 2,325,414.00/1,502.79
  6. Step 6: Final answer
    x = 1,547.40

Related Problems

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Half scale
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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.